Did you take the birthers seriously? No, you didn't. Neither did I. You gave them the derision they deserved. So did I. I take this conspiracy theory just as seriously.
Flat Earthers, Moon Landing Hoaxers, Birthers, and Putin Controls Trump fools all deserve the same contempt. You don't argue against them, although you do occasionally use them as rhetorical target practice.
You have it arse-backwards. Conspiracy theories are not wrong because they are ridiculous; They are ridiculous because they are wrong.
The 'demonstrate them to be wrong' bit is essential - if you skip it, you will end up ridiculing things that are actually true.
Lots of true statements sound ridiculous. A single photon passes through both of two slits, unless you check to see which one it went through. It sounds far fetched; But it's true. The solid rock beneath our feet is in constant motion, and continents drift around on the surface of the Earth, occasionally crashing together or splitting apart. That was considered ludicrous when it was first suggested; But it's known to be factually correct.
The Earth is easily shown not to be flat. The evidence for the moon landings is overwhelming. The evidence that Obama was born in the USA and not in Kenya is compelling. We can laugh at the fools who disregard the evidence, because we have plenty of evidence to show that they are wrong; And because their counter evidence is laughably weak.
So, what's your evidence that makes it laughable that Trump might have been compromised by the Russians? Is it that you can show that the Russians don't attempt to compromise western businessmen? That Trump hasn't ever been in a situation where that could have occurred? That all US Presidents are superheroic figures with invincible integrity?
I am not sure that Trump has been compromised by the Russians; But I am sure that there's inadequate grounds to dismiss the possibility out of hand - it's not in the same 'easily disproven' category as the idea that 9-11 was an inside job, or that alien abductions are a regular event that is covered up by the authorities. And pretending that it is, to avoid having to put in the effort to find evidence, is intellectually lazy.
There are dozens of detailed and well evidenced debunkings available for the idea that the Earth is flat. As we both agree that it isn't, we can skip the part where you find and show us the evidence to support your position. But you are being intellectually dishonest if you declare that a question that is not yet resolved is in the same category, in order to avoid providing evidence for your claims.