EDIT: This question was dumb, I misread the quote that made me ask it. Sorry.
This is more of a follow up question from schroeder's answer to another question.
schroeder said that CAPTCHAs are vulnerable to automated attack. After looking around it seems like modern CAPTCHAs are not (as far as I can find), the closest I have seen was a criminal organization having random people solve CAPTCHAs for them in exchange for access to porn or other online goods.
What attacks exist that are truly automated?