The obvious AI stuff is obvious, all the rest is either human generated, or you aren't able to detect that it's not.
So I would argue the world is already "a darker place".
Wouldn't it be lovely if we didn't rush headlong into making things worse at the first sign of profit or power?
I mean I've seen people saying that whole "oh, it's just so good you can't detect it" a lot but not any actual evidence. I guess sentence can be short enough to not look clauded, but aside from that smells are still very common even for the best frontier models, so how anything else would be indistinguishable ?
It's also a lot easier to get caught when you're not paying full attention to whatever is being sent your way. Say an algorythm starts playing AI music while it's just playing in the background, or a friend posts something silly that you read sideways.