There is no need for it. Sorry. Certainly not government mandated, which is the worst part.
Frankly if you treat the internet like we did all the way back in bbs days, it doesn't matter that much: Everyone is a liar. So I don't care what anyone says. Bot or not.
In the forums I run we haven't seen much of a bot presence at all, so these spaces already exist. How do I know? We have all met each other at one point or another. So I may know a, a knows b, and so on.
Do I want the burden of starting authentication on top of this? No.
I don't want the internet to require me to get authentication. I really don't care about the bot issue. Go outside and meet people in real life if that's what you want.