I have been on reddit for just about 12 years now. Something I’ve noticed over time is just how hateful the place has become. A complete outrage machine. Every single sub became filled with it. I’ve filtered so many subreddits over the last few years, it’s insane. I don’t know enough about this place to be sure, but I do hope it doesn’t become the same type of echo chamber of anger.
Kbin is very early access, but they are just different website software that essentially do the same thing - which is to communicate with other networking instances in “the fediverse” through a shared “protocol” called Activity Pub. The diagram of the tree in the linked wikipedia might help you visualise it.
Kbin includes a “microblogging” aspect as it is trying to also incorporate Mastodon (decentralised twitter) as well. There’s other software too like Peertube (decentralised Youtube) and Pixelfed (decentralised images) but I dunno how well they all interact with each other yet.