I finally deleted #Threads recently because their algorithm is annoying, they gave up on #fediverse support, and their app is loaded with UX dark patterns.
I still use #Instagram because the people I meet in person do, and organizing https://photostroll.nyc kinda requires it.
Fedi is the only place I really feel good about posting on, because I know where data lives and how it's distributed, it's community-run, and usually it's by the type of people I'd want running my virtual social space.
