I run several bridges from my home. With End-to-Bridge Encryption enabled this gives you about the same security guarantees as E2EE with a second device added (

I run several bridges from my home. With End-to-Bridge Encryption enabled this gives you about the same security guarantees as E2EE with a second device added (Signal Desktop, etc). With Beeper you can do the same, IIRC. Their value proposition then hinges on how good their clients can aggregate conversations and different chat networks, I guess.