I use 50+ discord channels and only the safecoin discord channel requires a mobile phone to sent messages. And no matter what IP is.
What are you talking about ?
It only happens if you created account from evil IPs.
Even that case, you only verify your account via phone number only one time.
I don't join the Discord channel of this one, I don't know but I told you the general phone verification step when create account on Discord through evil IPs.
Something as same as when you created bitcointalk accounts from evil IPs.