Whether a miracle claim is true depends on the evidence in each case, not on --
-- not on prejudice or dogma that no miracles are ever possible.
The only evidence against the MIRACLES OF JESUS is the dogmatic premise that miracles cannot happen.
Otherwise, all the evidence indicates that these events did happen.
The only evidence against anal probing aliens abducting people and . . .
There is very good evidence that something unusual did happen. It's a reasonable dispute as to exactly what did happen. But there is evidence about it, and all the evidence is that the miracle acts did happen. There is no evidence from the time of the event -- from the 1st century -- saying that it did not happen.
Whereas, by contrast, we have evidence that certain claimed miracles from that period of history DID NOT happen -- or, it can be shown that there is a LACK of any evidence for claimed miracles, based on the written record from that time. This distinguishes the miracles of Jesus from all the other miracle claims or miracle legends of the ancient world.
Also by contrast, there is much evidence that reported alien abductions did not happen. However, they can't all be disproved. Maybe some of these events did happen. You don't refute the Jesus miracles by tossing in other claims of crazy things that happened. Each claim has to be investigated, to judge in each case if it's credible or not.
So to just say "Well what about this goofy claim, or that!" is no way to refute this particular claim about what happened in the 1st century. Some dubious claims are true, and others are false. Probably many of them are partly true. They're not all in the same category. We can believe some and not others, depending on the evidence.
The only evidence against anal probing aliens abducting people and dragging them into their flying saucer for examination is the "dogmatic premise" that UFOs aren't real.
No, that's not the only evidence against those claims. In some cases the claims have been debunked. And where it was investigated and could not be debunked, and there was enough evidence, maybe the claim is true. In some cases someone might have been abducted, but they added extra details from their imagination, or they might have been drugged and suffered hallucinations, so that much of their report is unreliable.
Nothing is solved by having a religion which dictates that certain claims are always automatically false regardless of evidence that they are true. So, let's have the evidence in a case that is convincing. If there is no such case, then it's not analogous to the case of Jesus the miracle-worker, for which there is convincing evidence such as we have for other historical events.
ETA:
There are a hell of a lot of people who have attested to have been abducted and probed by aliens while . . .
Maybe the claim is true in cases where there's good evidence. Show us the example -- let's see the evidence, including any evidence claiming to debunk it. If there's more than one source debunking it, then it's much more doubtful. There's NO evidence from the 1st century debunking the Jesus miracle acts, like there's evidence or testimony debunking many paranormal claims.
. . . while there is no one who attested to have actually seen Jesus perform a miracle, . . .
Wrong -- there were probably some who attested to having seen it. It's true that the sources surviving to our time (the authors) don't claim to have seen it, just as our sources for history don't claim to have seen Alexander the Great and millions of other ancient figures of history. We have sources/authors telling us about historical figures they never saw do anything. In fact, 99% of our (ancient) historical figures were not seen directly by the writers who tell us about them.
That doesn't mean those persons in history did not do the things described in our sources. They probably did do most of what is described. To believe someone in history did something doesn't require that we have a source/writer claiming to have seen it directly. If that is required, then 99% of our (ancient) history events have to be tossed out as fiction.
. . . no one who attested to have actually seen Jesus perform a miracle, only those who claimed that others had claimed it was so.
That's what 99% of our (ancient) historical events are based on. Virtually all our sources for those events are writers who did not see it themselves but are reporting what others saw or claimed to have seen.
So the Gospel accounts are the same as almost all our sources for ancient history, reporting to us what was known or believed to have happened, according to all the existing information available to them, from written and oral accounts.
ALL the sources contain fact and fiction, and none can be totally relied upon. But all must be accepted as sources to tell us what happened, and we can separate the fact from fiction, using reason and critical judgment. And when we separate fact from fiction, there is only one reason to reject the Jesus miracle acts or put them in the fiction category, and that is the dogmatic premise that those events could not have happened because they're impossible regardless of any evidence. Except for this premise, there is no evidence against the Jesus miracles.
Although, once again, the multiplying the fish and loaves is problematic because it resembles too closely the similar story in II Kings 4:42-44. So this is one piece of evidence to cast doubt on one of the reported Jesus miracle acts. Other than this, there is no evidence against the Jesus miracle acts as being real historical events.