What are other people's impressions of the difference between the cultural vibe in farcaster vs bluesky vs mastodon vs lens?

(I have my own answers but am very curious what other people's answers are)

farcaster: tech ppl literary cafe – interesting discussions, can feel a bit serious

bluesky: tech ppl open mic comedy club – interesting discussions but can be drowned out by bad stand up acts

lens: convention center but no one knows what the convention is about

mastodon: haven't used in years 🤷🏻‍♀️