I disagree. Having a 2FA that sometimes (i.e. very rarely, but not never) goes down is still safer than no 2FA, and I can never afford to be locked out of my se

I disagree. Having a 2FA that sometimes (i.e. very rarely, but not never) goes down is still safer than no 2FA, and I can never afford to be locked out of my server. However, I could also see the opposite case being made. And I assume this is precisely why they made it an easy config change, to make it behave however you prefer.