There is an open discussion on GitHub for people just like you ^^
But discord is just much less work to manage, and is a communications platform that I use all the time.
This is just the beta, it's not like all of the development and discussionn is happening over discord now. But when I have time to develop and need some user feedback to ask about their problems or opinions, this is just much faster to iterate on.
In the end, we do this for free, and it takes up our time, so anything we can do to be more productive does help!