I installed it, and without consenting to sending any notifications or whatever, I started getting Signal messages from long-forgotten people who apparently had ME in THEIR contacts. It apparently notified THEM that I had installed Signal, which I absolutely did not want.

This included a few folks who I wish to distance myself from in every way possible, and have deleted from my contacts. Apparently they still had me in theirs. This also included a few folks who I keep in my contacts only so I'll recognize the number if it rings and know not to answer. Obviously the last thing I want is to remind these people that this I still exist and this is my current number.

The worst part was, for the ones who weren't in my contacts, I had to ask the stranger "Umm, forgive me for asking, but who is this?" in order to ascertain that, nope, I really didn't want to interact with them.

Shit shit shit shit.

Uninstalled it very quickly.