I know this is gonna get downvoted but...
This is all going to lead to needing to use some open blockchain based communication system.
E2E encrypted, routed through a public blockchain they can't block. Use one of Ethereums L2 systems to keep short messages under a penny or two and route all payments through Tornado Cash so they can't be tracked.
All open source, nothing to take down, uncensorable.
It won't be for everyone at first it would he too technical in a lot of cases, but it's going to be the last option at the end of this road.
