With Facebook, unless you actively block lots of people, your high school buddy’s uncle will show up with some valuable information to share.
With Twitter that crap is buried unless it hits some internet celebrity. Twitter is also less manipulative of the stream, while Facebook is focused on driving engagement.
I just opened up Twitter, the top 5 items are SwiftOnSecurity, my city’s mayor chief of staff, my little league, and a post about Roman artifacts. 100% signal.
Just opened up Facebook, and the top 5 are: somebody’s new curtains, a pitch to friend more people, an ad for noom, a colleague sharing his opinion about Texas abortion law, and a post from my favorite baseball team. 40% signal.
Formats and patterns is pretty much the only things you can judge a social media site on since there's no real way to say that content is universally worse somewhere than other.