It's pretty interesting actually, on facebook you see people show off a manufactured persona that is always laughing, on vacation in exotic or glammy places, and on LinkedIn it's the exact same phenomena but the success indicators are different.
I'm still a bit clueless on the whole LinkedIn influencer thing though. Is there some monetary gain from that? I don't think they have the same possibilities for eg ad space or sponsorship as eg youtube or blog influencers, so perhaps it's more a personal vanity thing, or selling books and courses.
</rambling>
Some people seem to be advertising their coaching services (for example: by targeting people looking for jobs), some are trying to advertise themselves professionally (lots of people showing Microsoft/Oracle/AWS certificates and writing articles about it), some are trying to advertise themselves as industry leaders so they can advance internally in their company, some are trying to build a network they can recruit from, and some are just misguided and are trying to replicate what they see on other networks.
I guess that's why content is all over the place.
I think that people who are "active" on LinkedIn rank higher in searches & suggestions, so the feel-good shitposts might be a way to improve their "SEO" if they rely on LinkedIn to find leads (recruiters, etc).
Every day some one on my twitter timeline will retweet a "10x your biz on linkedin" - reading them makes me reconsider if intelligent life exists on this planet.
If you have a sufficiently popular CRUD, and you don't go our of your way to stop them, bad actors will leverage it to do crimes. It's that simple.
Though these could be honeypots or straight up scams