Ok, but there's also post from 4chan, Xitter, Facebook, and everywhere else on the internet. Reddit, and now Lemmy, grab information and memes from literally everywhere so you don't have to.

There's always going to be a subject someone doesn't care for. Thankfully though, there's filters in most every app now. The ones further along in their Lemmy journey tend to use them instead of complaining about having to see things repeatedly.