There are a few ways a toot can get boosted massively, politically oriented outrage is by far the most common.
On Mastodon, I discovered someone via a boost who had wrote a great blog post. I followed them but found my feed was now full of bird photography (their main hobby, and something I don't care for). I added a filter for "#BirdsOfMastodon" (or something), but there were still too many without that tag. So I unfollowed them and now I don't see any bird photos.
I sometimes read literature outside my comfort zone. Sometimes I put it down -- not for me. But occasionally I discover a new genera I enjoy.
If you see ads for Ground News on YouTube they make it sound like you need add up what the right-wing ideologues say and what the left-wing ideologues say you get the truth. I get accused of being a “centrist” when I point out that people are using a toxic, hateful and othering style of communication (e.g. capitalizing Black doesn’t do anything about the difficult and long-standing problems of racism, maybe even mocks or trivializes the problem, but it sure polarizes the world into big B and little B people)
That would be the benefit.
I mean, if you don't actually know someone yet, is it really a good idea to hang on their every word the way social media does?
If your hobby is e.g., NFL Football, then yeah, the signal/noise ratio makes retweets a terrible thing that just clutters your feed.