My experience on fedi is essentially:
Bunch of posts talking about opsec, mutual aid and anarchism in broad strokes
Bunch of posts talking about pretty niche subjects, from anime through to coding to cooking to hydroponics, usually with a "hey, I did this, and if you're interested, you can do it too! here's the instructions <freely shares hours of graft>"
Bunch of posts talking about how to stay safe from Covid
Bunch of posts in languages I don't understand and sometimes don't recognise
Also, my cat/dog/bunny/lizard is really cute, and I thought you should have a free photo of them
Frankly, it's pretty awesome.