My understanding is (1) yes. (2) maybe, maybe no, depends on if they're looking up people tagging you in threads? If there's signs you're scrubbing yourself out

My understanding is (1) yes. (2) maybe, maybe no, depends on if they're looking up people tagging you in threads? If there's signs you're scrubbing yourself out of politically controversial threads that might become problematic. (4) yes, yes, yes. (5) yes. Assuming they do ask in the first place.