Captcha is already mostly machine breakable, I’ve seen some new interesting pattern-based stuff but nothing that you couldn’t do image training against.
At some point not too far in the future you won’t be able to use captcha to stop bots from posting. It simply won’t even be a hurdle, a couple extra pennies of computational power.
There’s probably some power in detecting accounts that are blocked by many people. The problem is no matter what we do we’re heading towards blocking them with an algorithm or AI. And I’d hate to see that for Lemmy.
This place is just the stuff you follow with the raw up and down votes. We don’t hide unpopular posts making brigading less useful.