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. If you've never had to put on a mask to fit in then the first wear can be very uncomfortable.