One thing to note is that Elon himself posted awhile ago (Around the time of purchasing twitter or before that a little bit) mockering and laughing at Youtube system saying that these guys allow scam ads, which I totally agree with him. I was shocked when I saw that while watching youtube a scam ad appears to me where they want to steal my crypto, either by showing a interview with a known man but underneath is a scam link. I thought Elon was a hero for pointing that out.
But then he bought twitter and made the blue-checkmark attainable by anyone who pays money, isnt that the same thing? In the past it used to be given to real people who owns their legit names, but now anyone can get a blue-checkmark if they pay which means a scammer can get a blue checkmark and pretend to be a real-person of some sort to scam people. And trust me people fall for it by thinking "Oh that is legit he got the blue-check mark" because they may or may not know that it is purchasable for money, they may still think it is the same way it was in the early stages of twitter.
So in a sense Elon promotes scammers by this move the exact same way YouTube promote scams in their platform by allowing them to put ads.