I specifically use social media to not engage the same people. With friends we often still use a mumble server or the next random chat app for the extended circle.
But I do like to read other peoples perspective. Naturally I prefer platforms like HN or reddit that are more orientated around topics instead of people. I don't care for e-celebs at all and as such platforms like bluesky or Twitter are often too boring.
Instagram is too stupid for me and I would suggest this is a form of pathological absence of any intelligence. There is some very good art though and some good ideas and this is generalizing, but the signal/noise ratio makes you crazy. Everything is filled with some form of very radiant moron aura. Sometimes I believe it is deliberate.
I think Threads was a conspiracy by Facebook to make Insta less stupid and expand the demographic. But it isn't open enough and anonymous usage isn't possible.
In the current form and with the dynamics around Twitter, I think Bluesky draws in quite a few insufferable people. Probably those that hate Musk the most and I am wary of them as I was with those that wanted to make him king of the universe in times past.