That's not a counterexample. The claim was about enforcement of a law, not proposed legislation. It hasn't worked very well for other governments that have trie

That's not a counterexample. The claim was about enforcement of a law, not proposed legislation. It hasn't worked very well for other governments that have tried a similar approach, so I have little reason to believe people would just stop using E2E encryption. For a more apt example, consider digital piracy laws which are IIRC in the US explicitly ignored up to a certain number of counted (far from actual!) abuses.