It’s unclear if the issue is a glitch with X’s advertising platform or a deliberate change intended to deceive consumers into believing some ads are regular posts from accounts they follow.
Is it? Is it unclear? To whom is it unclear? They've lost almost all their ad revenue by reputable companies, leaving the worst of the worst paying Twitter's bills. It seems highly likely they'd exert pressure for those few precious dollars, get ads to be more scammy, get fewer content checks on ads, maybe get some injectable JavaScript to exploit end devices. None of that would surprise me even a little given how many ad networks we see doing exactly that.