Yep! You can join using this: https://discord.gg/T8W633X
Things like this have been tried in the past (slack just a few months back), and the problem is no one ever used it. I doubt the Garmin folks would want to split their time between this forum and something else and I know I wouldn't want to either.
The link is dead can you send annother link please ?
I suspect that if the link is dead, it no longer exists as it likely never took off.