My exact experience. I spent months trimming my follow list down from hundreds to about 25 very carefully selected people and blocking and muting words and accounts, all trying to make my feed about the people I followed instead of what ever the so-called influencers and Musk toadies were peddling. It didn't help much so I created a brand new account from an email address on a different domain using a different web browser on a different machine and the content was no different except that new account also got and about a dozen Tesla sycophants occupying every 4th or 5th post in the feed. So, new accounts get all the same garbage as old accounts with the added benefit of a bunch of Tesla simp pseudo-ads.

Really? Crikey. I am happy to be wrong.