I think I'd probably find self-identified "skeptic" or "atheist" groups to be pretty grating. Defining yourself in opposition to a thing, as opposed to FOR something, can be a very depressing way of going through life.

That being said, I readily self-identify as "atheist" much more than skeptic. As someone who's also interested in modern #ufo inquiry, I find self-identified "Skeptics" to be incredibly annoying. These are people who have basically pre-committed themselves to taking the "conventional wisdom" side of any issue, rather than starting from an open position of inquiry and seeing where it leads.

And don't get me wrong, siding with conventional wisdom will make you right 99% of the time. There's plenty of dangerous "woo" for self-identified "Skeptics" to push against. But it's that 1% that will get you, and that's where the UFO/UAP issue lives, IMHO.