I could see them eventually going far enough to bypass all of that and either requiring age verification at the point of the internet uplink on the ISP side or making it a crime similar to using a fake ID to buy alcohol if you try to bypass it. And then also punish companies that happen to be serving underage/non verified users.
There is already age verification at the ISP level. They only sell Internet service to adults. What the adults choose to do with it or with whom they share it with should be of zero concern to the government.
Of course, that's an ineffective argument, because the long-term goal of these laws (in the sense of, "the goal of the system is what it does") was never going to be about keeping kids off the Internet.