Like I know this isn't a shock to anyone. But it's a super surprise to me. So since 2011 I was really busy with various educational or work stuff, and never had time to log in. When I did log in to post something random for family to see, I had that Fluffbusters extension that cuts out the extra shit that Meta adds to your feed.
So recently I was forced to use the FB app to do some IRL stuff related to Palestine. Holy shit the unfiltered site is garbage. You have to scroll through 10 or so unrelated pages to see your friends' posts. And the sheer volume of paid Israeli stuff is mind blowing, despite me trying to tell the algorithm that I don't like it. And despite me being friends with and liking shitloads of ML stuff, I keep getting Unilad level "let's save a bunch of puppies" content. Like I get why people who use traditional social media become liberals or worse, I even found myself becoming a bit more lib looking at it.
I think a lot of it depends on where you live and how often you use it, since moving somewhere where 99% of community information/news/events is shared on facebook my feed has gotten dramatically more relevant than it has been pretty much any time in the last 10 years when I barely ever logged in. It's still mostly brainwormed boomers but at least its my friendly neighborhood brainwormed boomers...