The main buzz of Twitter is adult content (not perverse, just for adults). So there aren't really any kids to advertise to on the platform and basically anything can show up in the algorithmic feeds.

Adult are usually the ones buying the movie tickets, toys, and other merchandise.

And also, there's this: https://www.thestreet.com/investing/disney-has-a-plan-to-tar...

So, I've been off Twitter since last November, but before I went, until I blocked him, virtually every Musk tweet was showing up in the algorithmic feed for me, and it was constantly suggesting I follow him. And, like, a lot of the material he's been tweeting lately is very far from family friendly, unless you're a rather odd and frightening family.

(Of course, possibly it doesn't do the Musk hyperpromotion thing anymore.)

I recently re-downloaded Twitter to give it another chance and I can confirm it does still promote Elon's posts everywhere. Even when I have select "Show less like this" etc.

You could check the Elon headlines on Hacker News, like "Elon drives 9,500% increase in Pizzagate content."