The standard for robust and effective age verification is extremely low, given how I’ve seen anyone do age verification. It’s also pointless if we’re talking about the internet, you are essentially outsourcing your porn production to foreign countries
Foreign countries with less regulations and protections for sex workers and actresses.
The standard for robust and effective age verification is a moving target.
Foreign websites will be solved the great EU firewall that will inevitably come "to protect the rule of law" once these legislations are passed.