The "verified" badge on there is a good heuristic for who not to follow (if not outright block them) because those are not people anymore, but marketing/PR operations.

LinkedIn desperately tries to get me to “follow” the people you mentioned which I always ignore however not following them still doesn’t isolate you from the noise.

It seems like everyone on LinkedIn is trying to be an “influencer” or wannabe thought leader posting bullshit motivational content or presenting obvious facts as something groundbreaking.