They require a phone number for creating an account. That right here is a never use in my book.
At the time I had TOTP based 2FA since forever.
Fine, I got myself a burner number (not sharing a real number with creeps and bullies), account tot unblocked. I kept using it.
A week later I deleted a phone number form my account (marked as optional after all), and the account got immediately, immediately blocked, after I saved the changes.
F** Discord and its ilk.