Comment by londons_explore

There are still plenty of good captcha approaches left, they're just more invasive.

Things like "please type your credit card number here and pay a 1 cent fee".

Or "send us a selfie with your passport".

Or "Get 5 friends to vouch for you".

Or "please log into a government website and oauth this app"

Or "please log in with a gmail account that is at least 5 years old".