Based on a new proposal by the Belgian Minister of the Interior, EU governments could endorse the much-criticised child sexual abuse regulation (CSAR or chat control) as early as June after all. This is what internal information leaked to Pirate Party MEP and shadow rapporteur Patrick Breyer reveals
It is assuming this is implemented in a way that forces all existing messaging services to implement this or shut down. In that case, you would want to build it from source from a point in time before it was implemented (or shut down). If that is not the case, then this wouldn’t be much of a problem to begin with, right?
This is not possible. Anybody can host a messaging service as a tor onion, and there is nothing they can do about it :)
The only way they can make it work is to basically only allow connections to whitelisted services (not even GFW does that).