The PGP signatures were removed, nominally because few people used them. ...but the timing of the removals is coincidental, no?
"You need to have a backdoor that lets us see who's downloading what packages and let us inject custom code to particular targets"
"That's technically impossible because of..."
"Here is a court order. Implementation is your problem. You're not allowed to tell anyone you even received a court order."
"...well, I guess signed packages have to go then..."
(:
I don't actually believe that, since PGP signing was frankly, barely used and really there's hardly any meaningful difference between a PGP you can't verify (which was most of them) and not having it; in fact the illusion of security is probably worse than not having it at all.
...but still. As you say. It sucks there's no meaningful replacement for it.