If you primarily care about user experience and lack of friction, accepting both centralized and decentralized approaches as means to an end, you usually end up with something centralized.

Trust me, as a screen reader user who often transmits high-quality audio, I know that a web client just won't cut it in more advanced scenarios. WebRTC implementations work... kind of. Sometimes. An actual app gives you much more flexibility and control, and makes the UX much better.