I don't trust new products anymore, especially anything like a new chat app. I don't install new apps. I'm more willing to try something if they have a website that works in incognito mode and doesn't require a phone number to create an account.
Unneeded permissions are practically a cliche by now and the permissions that apps get are routinely abused. Give an app notifications and they will spam you while the app interface isn't running.
Some software doesn't even need to be native or connected. Word processors, calculator apps, many lower definition games and even image manipulation could be done with one fat webpage.html file.
I'd personally suggest setting up a virtual machine with some sort of "checkpointing" feature, where you can rewind the machine to an earlier state if you don't like what an app did to it.
I don't want to make a new one tied to my phone number.