Per [0], a possible answer to this seems to be that an arms dealer had connections to a company called Tardigrade Ltd. and all transactions with firms like these are prohibited which is why the word "Tardigrade" made it into PayPal's filter. As long as companies like PayPal have issues like that, or with moderation in case of Youtube, Twitter or Facebook, I'd claim neither of these companies have actually solved scal…
Next time somebody here creates a shell company for very bad things, please try naming it YPal!
PayPal is also just two words blended together. I'm not sure they're anyone's friend though.