It's unfortunate you were downvoted. Perhaps it's because you're self-promoting, but you were up front about it and your pitch was relevant and focused on user needs.
It is up to us to do something about making our software more privacy conscious. And management/leaders/founders have to put up the money to support it.
This project is also an experiment to see if its possible to build a "successful" app without user behavior tracking, without endless AB testing.. and so far it seems totally possible.
Do have desktop recording on the website to capture audio if the call is on speaker. Some users use that.
Adding another number to the call seems inelegant.