As the title says, Mobile TFV will further help keeping account secure. How?
If someone tries to hack your account it can be very easily done if he has access to your email as well. It makes it hard/impossible to do so if there is a mobile verification( sent via text).
SMS verifications have been bypassed just by people calling service providers and saying their phone was stolen and requesting a new SIM card. You can find security flaws in just about anything.
Sending an SMS isn't free.
SMS can be slow(er).
If someone has your email, you've got bigger issues than your warmane account, enable 2FA on your email account also.
If you don't want to open your email every time you log in, use the phone 2FA app like google's https://play.google.com/store/apps/d...authenticator2 or https://apps.apple.com/us/app/google...or/id388497605
There's a few of those on Microsoft Store if you don't want to use your phone, but use your computer instead. And depending on your knowledge, it's very easy to make your own custom one.