This is going to be the most attractive and most probable working theory about why Q would allow such a crappy captcha (which doesn't even work right, and doesn't really filter any bots or shillposters.) I'm going to mention it as a setup for somebody with 'access' on this board, as long as the stupid cartoonish captcha exists. I will also ask Q if it's true next time Q posts. I'm sure he'll ignore me, but– the captcha is so lame and useless, it could only be a precursor to getting rid of a Judas Goat among the BO, BV, Baker's Dozen…
Now that it's been mentioned, it's almost OBVIOUS