Just pull the plug once and for all
I'm no fan of the "red menace" but a lot of this makes sense, there's a ton of absolute shite on the internet for people to waste their time on. Sadly while I think these are good ideas, you just know they will not be enough and they will keep expanding the definitions and what started out as relatively sensible will end up making it hard to find any entertainment on the internet withou being branded a degenerate in the eyes of the Chinese gov.
Given that you know the grandkids of Mao will abuse these extra rules probably best they just go all out and just use the "Great Firewall" to finally cut China off from the rest of the world's internet once and for all and have their own internal network with gov approved content. They're pretty much there already so might as well just go back to being a closed kingdom state once more.