No, it really is just another religion because a lot of skeptics suffer from huge amounts of confirmation bias.
They conclude that something cannot be true, and so therefore proceed to prove it. Often filtering out things that are contradictory to their conclusions. Just like religion.
Skepticism is not "concluding that something cannot be true" prior to examining the evidence. Your right that activity is religion, because that is what religion (and all supernatural thinking) does. To conclude something IS true inherently entails concluding that other things cannot be true. Belief is an act of closing one's mind to all possibilities but one. Religion and faith promote such closed minded belief and thus close minded disbelief.
Skepticism is the the act of requiring that any claim be well supported before accepting it and thus before rejecting as untrue its alternatives. It is the epitome of open-mindedness and given each idea a fair chance to prove itself.
There are likely instances of people claiming to be "skeptics" engaging in religious like close minded bias. But most seeming are examples are just people rejecting a faith-based view and pointing out that the "evidence" for it is objectively far weaker than the evidence for the alternatives.
Note that the concept of "skepticism" as a verb and general concept is not the same as when the root is attached to a specific topic, such as "Climate skeptic". In that use of the root, it simply means someone who doubts or rejects a specific idea, such as human caused climate change. In that use, it has no meaning in term of the philosophical method one used to reach that position, only what position they hold. One can be a climate skeptic because they think it contradicts the Bible, or because it serves their greedy self interest to deny the harm done by the actions they hope will make them $. Technically, one could be a climate skeptic because one thinks the science is against it, but the science is so objectively for it that such a position isn't plausible by any honest analysis of the topic.