Seriously.

There is always the chance of entering a discussion with someone who disagrees with your “obvious” assertions and also may have the ability to change something. It is always good for someone to actually go and look to prove your point with real verifiable evidence instead of just going “well obviously I’m right” and ending it there.

It means “functioning as expected”.

Who do you think is in the militia?

(edit: source https://www.constitution.org/1-Constitution/cons/wellregu.htm )

The Pixel series has a ton of postprocessing integrated into the photography. It usually results in something people find eye-popping, but I suppose this is the inevitable result when it sees something unfamiliar.