The parent's gripe is presumably about many bad SMS-based 2FA implementations banning non-post-paid numbers from use. E.g. Blizzard (assuming they still do thi

The parent's gripe is presumably about many bad SMS-based 2FA implementations banning non-post-paid numbers from use. E.g. Blizzard (assuming they still do this) If they want to be aggressive about fraudulent activity, fine, but don't restrict perfectly valid phone numbers from being used in their required 2FA scheme.