How? There is an easy solution to being inundated with things you don't want to see. Unfollow anyone who regularly posts things you don't want to see. I've done this. I've unfollowed pretty much everyone on Facebook, except for a few people / groups. I also hide posts that I don't like, but come from people I still want to hear from (I've heard this gets fed into FB's ranking algo for you).
Now my feed is mostly interesting news stories / interesting commentary / educational content / conversations on Facebook groups related to my interests. My FB news feed is actually better than Twitter now, albeit with 30x less content. Tangentially, this is why I appreciate the Twitter algorithm change.
Now I spend less than 20 minutes a day on Facebook. I don't get why people feel the need to delete the account altogether.