I got my current job (which I love and am being paid incredibly well for) by cold-firing a DM to someone at the company who I thought would be responsive who then put me down as a referral.

It's a whole song-and-dance, absolutely. The 'game' is to post enough (once/twice a week) with genuine, non-AI generated content to get your co-workers liking your posts and engaging. General, pro-social musings about layoffs, coworkers, job prospects, etc.

Recruiters started hitting me up fairly quickly after I started doing this even with my paltry engagement numbers (5k~ views per post) - half a dozen DMs a week for pretty decent roles in my city while I kept it up (and still a handful now after I stopped posting). And it also made my profile relatively 'attractive' for hiring managers, too, which is to say I didn't seem like a total sociopath with anger problems.

It helps that code-switching is pretty easy for me given my personal history so it doesn't feel like I'm somehow fundamentally betraying who I am by posting fluffy things on one social media platform. I imagine if you're more sensitive about your identity or how you engage socially, it can be very difficult to put any effort into your LI profile.