I was going to say: "but if you get MITMed, the attacker can replace the Release.gpg as well", but clearly I didn't understand GPG signage: an attacker won't ha

I was going to say: "but if you get MITMed, the attacker can replace the Release.gpg as well", but clearly I didn't understand GPG signage: an attacker won't have Debian's private keys and so won't be able to produce valid signatures. Spelling out my derp in case someone else had the same thought.