They should give you a refund if you don't want to provide personal information and you didn't agree to this up front, but at the same time, I do want Minecraft to police its userbase pretty actively, because my kids use it and they are not sophisticated about things like phishing attacks. Roblox is far more unsupervised and anecdotally it's far easier to stumble into kid-inappropriate things on Roblox.

Captcha just isn't as good, spammers and other bad actors can get captchas done at scale a lot cheaper than they can acquire burner phone numbers.