It’s easy to populate your feed with things you specifically want to watch: watch the stuff you’re interested in and swipe on the things that don’t interest you.
Reels don't interest me, they are just showed in my face whenever I use Facebook (or should I say Face-butt?). It's impossible to hide without using a custom script/adblock, which I ended up doing, but the only long term, cross device solution is to simply to delete the Facebook account.
They can be useful. My feed is filled with startup advice as well as Chinese lessons. I think a big part of my Chinese vocab comes from watching reels teaching me chinese.