Was he wrong? That sounds like it was about some sort of mandatory-mitm scheme or ban on e2e encryption. Like, yes, you can pretty easily make it impossible for the government to decrypt your bits, but the government can just as easily arrest you for it.

No he was saying he doesn't care that creating a backdoor for encryption means anyone can use that backdoor and that you must both follow the law by being secure but also follow the law by being insecure. People arguing that that creating encryption that both did and didn't have a backdoor was impossible got that little gem in return.

He was effectively saying this: https://xkcd.com/538/