I didn't feel comfortable giving discord my phone number when they demanded it, so I lost access to the open source communities that insist on collaborating there. I wish breaches like this would cause people to reconsider their choices but sadly, it's unlikely most users will move.
Discord doesn’t require a phone number. It’s individual community owners who opt to require it. You can create a server that doesn’t require one but it effectively means you can’t ban people since they can just sign up again on a new account.
You can set up a community on their servers.
I’m not sure why they chose to use misleading language, but it is misleading.