Isn't this actually improving safety by openly admitting how things always were in practice? Any e2e encryption provided by the same entity who fully controls both the blackbox clients, and the server in between, is just a security theatre that they can selectively bypass anytime with very little risk of detection. Not really much better than simple client to server encryption. Truly safe e2e requires open source cli…
I can't say I really mind this change by Meta that much overall though. Anyone who's serious about privacy probably knew better than to pick "Instagram chat" as their secure channel. And on the other hand having the chats available helps protect minors.