PSA: You don't need the Token app to enable 2FA anymore.

[linayar]

Do you still need it every single time you login, though? What always bothered me is that, where other 2FA would only check me every month or so or when my login looks suspicious (such as logging in on another device), FFXIV was asking me every time I would log in.

Yes, you do need it every login. I think that's the point of having a 2FA. If it only checks every month, then the rest of the month, it's as if you don't have a 2FA.