The guy in California who wouldn't let them into his Apple device, they didn't "reveal" anything about their techniques, but they somehow magically bypassed full disk encryption.

Pertaining the idea that they can't do anything without revealing this, the TLA is notorious for parallel construction, so they can pretty much do whatever they want, and they obviously demonstrate this on a regular basis, such as jailing people for lawful entry into a public building while being guided by the "Capitol police" into the building.

I don't have any specific information on the AES 256 situation.

The guy in California who wouldn't let them into his Apple device, they didn't "reveal" anything about their techniques, but they somehow magically bypassed full disk encryption.

Pertaining the idea that they can't do anything without revealing this, the TLA is notorious for parallel construction, so they can pretty much do whatever they want, and they obviously demonstrate this on a regular basis, such as jailing people for lawful entry into a public building while being guided by the "Capitol police" into the building.

Pertaining the AES situation that I mentioned, I can't reveal anything specific about the reason why I believe this guy to be correct, otherwise I might incidentally reveal information about the organization, which would then make it pretty easy to figure out who this guy is. But I also don't have any truly specific information. The nature of the revelation has to do with requests made by the government which corroborate the theory.