I absolutely agree that "proof of brain" is a pretty bad term. It has a nice ring to it and people that know very little about the technology might like, heck, it might be a nice marketing strategy, but it's absolutely inaccurate.

And there is a very common killer example to show how inaccurate the term actually is - all the bot voting. How are the bots showing they have a brain? If this system is supposed to be a proof of brain one, then it isn't working at all as automated voting and earning is commonplace here.

So I do agree that the term needs to be replaced with something better and more accurate.