Things are not perfectly fine how things are now. AI slop is destroying the internet. Tons of grifters are earning tons of money off YouTube by brainwashing millions of people with AI slop, including my mom. YouTube needs to do something and this seems feasible and far better than doing nothing.
I also think the false positive rate is going to be far lower than you think - especially if YouTube sets a caution threshold.
I'm open to other solutions but if you propose we just keep what we have now, then you are proposing an absolute disaster.