Title.
Signal can then claim it has no control over what user-made Add-ons are installed and used for. They just support the framework, which is not illegal, just like media players support playing illegal content but don’t create such content.
For people out of the loop: EU soon likely enacts Chat Control 2.0 which will force chat services to hand over keys so governments can read all your personal messages.
It’s not about prohibiting e2ee; it’s about enforcing client-side scanning.
Yes, that also breaks e2ee, but they can still go “nooo! E2ee is still perfectly fine and legal! You know, as long as we get to read anything anyways”
And realistically, this will probably end up being implemented on an OS-level as well. So even using a self-hosted matrix server would not be immune.
Not to mention that both you and your conversation partner needs to take steps to evade this; one party is not sufficient.