It's a shame, the idea is good, just not defensible against copy cats.

I think they missed an opportunity to pivot into voice chat for websites/apps as a service. I see big value in how Discord does ambient voice chat as a feature of a server, and I think that could translate well into smaller communities that live outside Discord in websites/apps. Provide the service in an easy to use slick API/SDK, and handle all the heavy lifting of voice data/p2p etc.