I recently tried to open an X account, the process was punishing: the captcha was six images of ~5 dice each from an acute angle, and I had to click the one where the top faces added up to 15. That takes considerably more time than "select all the cars", especially if the correct image is among the last. And that challenge was repeated 10 times (with a counter to 10 shown from the start, so it wasn't just that many because of retries after failure). I actually went through with it, but in the end I failed to sign up because the verification email never arrived.

I've since been wondering whether Musk now wants it to fail, so he can draw a line under this chapter and shift focus back to his more succesful ventures.