I agree SimpleX is superior protocol. I use it to share text between my devices. But I’m little bit hesitant to recommend it to friends and family because it is VC funded. Until SimpleX becomes non-profit or alternative implementation of SimpleX protocol starts showing up, I won’t use it as my main IM.
This is why I like GrapheneOS on phone. It is hardened and secure, but never gets in the way of your work. Everything works as it should. Kicksecure is the closest on the desktop space, though Fedora is also reasonably secure.
I think it depends on maintainer of the device. For me personally, LineageOS has broken a basic workflow like having Signal voice/video call. None of the IM apps are able to pick audio from microphone on my device (and various other models as well) due to a bug in LineageOS for almost 6 months. I regret installing it.
I think, OP is pointing to the fact that ECH makes it harder to block connections to mothership from proprietary apps, TVs etc. These apps could now use ECH, DoH to hide it’s traffic from being observed.
But OP could always buy a better router that can proxy layer 7 traffic and block the traffic if desired.
Tailscale already has Mullvad integration. Why don’t you utilize that?
Don’t bother videos against GrapheneOS. The lead of GrapheneOS has autism and he lacks social skills. This creates endless loop of hate talk between some YouTubers and GrapheneOS.
As a technical project, GOS is far superior and it is the most secure OS on the planet right now. The lead of the GOS has developed hardened malloc and various other security solutions that is now baked into GrapheneOS. So I would ask people to enjoy the project rather than stimulating more fuss against the project.