And those are the exact same reasons I loath the trend of discourse moving into discord groups, or slack groups, hell I've even seen Facebook groups.

None of those are reachable without an account and in many cases an invite (private by default), they are not indexed by search engines, they are proprietary, cannot be exported or archived, etc.

It's asking for knowledge to be lost.

Thanks for sharing. London has these permanently, and while not cheap, they're very much worth it too.