Don't hesitate to mute accounts. For example, blocking Gary Vee almost single-handedly made my LinkedIn feed usable again. I never followed him or any of his pages to begin with, but enough of my connections embarrassingly engage with those kinds of posts that it cluttered everything up. Go to the source and pull out the root of the problem.
re: politics, there are one or two LinkedIn entities that post the most mildly progressive of content, and it's the knuckle-draggers in the comments that made me block these pages.
I host a weekly open-mic at a local bar (mostly music but some standup and poetry) and more and more often I’ve had to figure out how to gracefully handle a performer using some of their 6-10 minutes to share their not-as-popular-as-they-might think political takes or commentary.
And it should be handled gracefully, because I’m not in the business of banning political content from the contents of poetry or standup or lyrics or whatever. Both from all sides I wish there was a bit more of a shared cultural understanding or reservation towards divisive political topics.