I've been experimenting with posting on LinkedIn and realized what the deal is. Basically it's a lot less hostile than other social media for people with no pre-existing audience: on Twitter you can post and nobody cares, in HN you can submit and nobody cares, on Substack you can write a personal blog post and google doesn't care to show it in search results, on Youtube you make a video and nobody cares, etc. (And let's set aside even more difficult stuff like making a podcast and hoping anyone cares)

Meanwhile on LinkedIn if you post your thoughts on something, share an article, or mention a project they give you a good push to at least a few dozen people and you may see a like or two from a 3rd degree contact(!) within minutes. And then they aggressively SEO the feed too so now if someone Googles your name your LinkedIn posts will show up