The onboarding will offer you a lot of topics to sign up to. These contain communities in them. The idea is to populate subscription feeds, however it can leave some users with a lot of undesired subscriptions if they click too many.
If you wish to roll this back. Go to Settings -> Profile and click the yellow bar. Don’t click the red bar!
But welcome, and feel free to post your thoughts here.
!newcomers@piefed.zip for a specific community also devoted to new users to the Fediverse.
Come Join us in the Zulip Chat if you have specific queries.
Reddit has turned into a cesspool of censorship and corporate/government astroturfing and sock-puppetry, I blocked the entire domain in my hosts file years ago.
Unfortunately it’s where people post things, and I’ve already cut out Facebook, Threads, Xhitter, Insta, whatever, so if I need to find information about something happening, that’s pretty much the only place left for me to look (nowadays when there’s only like 7 websites in the entire world).
Whether I go once per month or per day during high activity timeframes, it’s where some content is. And sometimes not even then: irl, the entirety of Reddit is considered a niche habitat for nerds. So if you want to know a specific thing - like a schedule for a local park, you pretty much have to use whatever they chose to post their content to, or else go without.
Rather go without than consume corporate fascist (but I repeat myself) crap.