Then when something pisses me off at work I'll dig through my "hey this is a brilliant idea, I gotta write it down" ADHD notes I have in apples notes thing. I'll give it to an AI who will rewrite it to a load of crap that sounds way too professional to be something I would write. It will give me a great structure for the sections I want to write out of my crazy mess of a note. So I'll re-write every paragraph using basically none of what the AI output aside from the skeleton. Then I'll post it right before all the middle managers and c-levels take the train home on fridays. This will get me in right when they are LARPing on their linkedin.
Sometimes I'll get a tens of thousands of views. I've even had likes from one of the equity fund managers that owns the company that owns the company I work for. Those times I'll get some comments from the big bosses at the coffee machine or during lunch.
Maybe it's silly, but it works. At some point you'll also get enough followers or recognition or whatever it is they meassure you on that you'll start getting job offers from "real" people. I've had managers contact me directly for positions they were looking to fill. It've never actually gotten a job through linkedin though, but then again, all the jobs I've gotten after my first one has been through my real world network some of which have grown out of linkedin relationships.
I do wish the corporate larping platform our society has decided to use was decentralised though.
I doubt any company primarily uses LinkedIn for promotions, but it does help your career if you are known for something positive by the people who run the company you work for.