If everyone is so sure about this or that, or they're erring on the side of caution purely because they don't know, then let's follow the thought.
What do we know? Birthplace? DOB? Relatives? Employment history? School?
There is surprisingly little information about this man, despite the fact most of us can recognise him (and his obvious costume) on sight, and he always seems to get favourable positioning at Trump rallies like he's an important guy.
People say "he's some bum" based on his appearance, the fact he always wears that ill fitting jacket and has a permanent level of stubble that barely changes, but if he was a bum he wouldn't be getting tickets to endless Trump rallies.
Let's analyse the appearance. Like I said, he always has that stubble, and has maintained a consistent look since at least 2016. When you find pictures of him, he often wears a shirt of the famous George Magazine cover which contains many Q signposts.
My working theory potentially has to do with Project Looking Glass, but I can't really be specific about my personal wacky theories.
But the best place to start, whether to find evidence for or against, is looking up what is normally a paper trail of someone's life, and seeing what we can concretely find. What can we map out about this guy before he first appeared?
How come he's always there? What are the odds he was there at this exact moment in such prominence?
I remember seeing him at a voting or recount as an observer. Forget where, but I’m guessing 2020 elections