There's been a lot of question about the motivation for this feature. Am I the only one that thinks this could be related to things like the EARN IT (or something similar).
Here's an article from a year ago on EARN IT:
Theoretically, a system that uses client-side scanning could still send messages encrypted end to end, and so the Leahy amendment would not offer any protection, but many of the same confidentiality concerns with backdoored “e2ee” systems would continue to apply.
Source: https://cdt.org/insights/the-new-earn-it-act-still-threatens...