Sorry, I guess I thought Musk had already removed legacy checks. The whole thing seems a little silly. King obviously doesn't need Twitter, but I'm sure he receives more value out of Twitter than $8/mo even so (or whatever they're charging now).
But accounts like his are what _drives_ people to Twitter. I already left months ago, but I'd definitely be leaving if the company that profits off of me wants to charge me for the privilege.
If you click on his checkmark it tells you that he's a legacy verified account and does NOT pay for Twitter Blue.