So when Signal decides to stop supporting your device, you're left with no choice but to get a new one.

So there's no point in auditing a Signal release.

So as Signal becomes more and more disagreeable (something that's bound to happen with any actively changing software), you're forced to take it or leave it.

It's a trap.

I am a user of Signal, and have been using it for a number of years now, but this concern remains.