One day that'll be illegal. End to end encryption? That obviously means you're a drug trafficking money laundering pedophile terrorist. Off to jail with you despite zero evidence. Maybe they'll declare your efforts to protect yourself as being in contempt of court and then jail you indefinitely until full decryption.

I guess there is an interesting possibility here. Perhaps the targets were encrypting end to end (that is more or less the default now with XMPP clients). With the TLS over top of everything the attackers would not know that. Perhaps they went to all this trouble for nothing.