There's at least a little bit of strawman-ing going on here.
The regulators are not insisting that blue checkmarks mean what they've always meant. Secondly xitter hasn't been transparent about changes to blue checkmarks. There was a long period of time when blue checkmarks were given or even forced upon credible sources at Elon's whim while he sold them to hucksters and frauds. Even if blue checkmarks had been that debased throughout their existence, there's still plenty of basis for regulators to find that they are deceptive.
The regulators are not insisting that blue checkmarks mean what they've always meant. Secondly xitter hasn't been transparent about changes to blue checkmarks. There was a long period of time when blue checkmarks were given or even forced upon credible sources at Elon's whim while he sold them to hucksters and frauds. Even if blue checkmarks had been that debased throughout their existence, there's still plenty of basis for regulators to find that they are deceptive.