> If somehow Gmail fucks me over in the future, I’ll deal with that when the time comes.

You should at least try to imagine how catastrophic losing access to your email would be. How many accounts on other websites are linked to your email? Which of your banks have you set up backup emails beyond your primary? What about car registration and voter registration? For me, those both use email 2FA. For a while I was using a Nest thermostat; my house temperature in a large part was linked to my email.