I'm very biased here, i don't like discord and i started to use it just to follow splinterlands related communities. A switch to whatever finds me ready.
But as you said, it's a very hard step for the existing communities. Nonetheless i believe, that with the expansion of the player base such migration will occour anyway, it's just a matter of driving new people to a better option.
I'm not aware of matrix and i'm going to give it a look asap.
Thanks for your reply. Unfortunately, I'm not a full-time player. Otherwise I would have simply opened a channel on Matrix myself. However, it's a huge task to moderate a large community and I simply don't have the time for that. :-(
Btw: My handle on Matrix is @hagbard:matrix.org if you're looking for people to chat with.