I see a BTC background for that npub.

Not really - I suspect client issue. but we’re it true, it wouldn’t need to make sense. Just another case of viral conformism

Oh weird. Do you think you’d at least vary the style of profile picture? Or are they trying to create a veritable red army?

These look like command and conquer characters

That’s from a song Tkay

Or cloud in general

Basically

Ah, yes. I'd assume they're bots.