There's one thing worse than a block page being shown to humans because an algorithm decided they're a bot: purposefully false information being shown to humans

It's also just wasting more of the planet's resources as compared to blocking

And more effort, with as only upside that it's not immediately obvious to the bot that it is being blocked so it'll suck in more of your pages

I understand that people are exploring options but I wouldn't label this as a solution to anything as of today's state of the art