With two possible (unproved; those accounts might be hijacked) exceptions all of these are sex spambot/deboost causing accounts.

Well, ok, to be more-precise they're either (1) bots or (2) some other artificial thing.

They're all brand new, have a couple hundred accounts they've followed and only a couple of followers (fools) in return.  They also have either no content at all of their own or a handful of sexy pictures.  Some explicitly say they're in the "massage" or "escort" sort of business and a couple claim to want a "serious" relationship.

Right, you want a "serious relationship" as a (claimed) 25 year old with a 61-year old man.

"Serious", I'm sure, is defined as "you shower me with money and I'll shower you with sex."

Leaving aside the censorship (don't you dare state -- truthfully -- that Elon has laid off people while hiring H-1bs at his companies, never mind everyone else in the tech space doing it -- and don't criticize the other "wrong" people), leave aside Elon's newest exhortation (don't ever talk about corruption; that's negative you know!) or get de-boosted and I'm sure there are also algorithmic games afoot should you go after the funding rounds from big places like Blackrock aimed at his "AI" game -- why that would probably draw an immediate banhammer!

Incidentally the tactic used here is that your association with such "ill repute" will ding your "social credit" score on X and thus your reach even though you take no affirmative action.  That is, you don't have to interact with said spambots; their mere listing of you as someone they follow "taints" your account -- or at least it used to (and probably still does.)

Therefore this is an attractive thing for those who don't like what you say (e.g. my clear statements that H-1b perjurers should all go to prison and be asset-stripped to their underwear) to attempt to destroy your "reach" with others.

In other words, suborned and intentionally ignored fraud which of course Elon spends exactly zero of his much-vaunted "AI" capability he wants everyone to "use" (really be "used by" since anything you give it now belongs to it) eradicating.  If there was any "intelligent" behind such a programmatic thing identifying and removing all of these would be trivial given that a human can spot them instantly.  Therefore its either not intelligent or Elon wants them on the platform and likes what they're doing.

The better question is why would any real company with a real product to sell pay to advertise to sex-bots?

At least neo-Nazis are people and might buy products and services..... right?