I'm not a pornographer, of any type, so I will never find myself having to be concerned about children accessing my websites and being on the receiving end of any law that intends to regulate this.
There are plenty of solutions for that already in place. Child sex abuse sites get blocked, for example. Even forums like Kiwi Farms have carriers blackholing them.
No reason why this can't be similarly enforced for porn sites that skirt the age verification rules.