The hard part with 2FA over SMS is that it's no longer considered secure [1]. I want a dumb phone too, but with all the security tools we need (password manager, 2FA apps/tokens, encrypted messaging, etc.) it's becoming less and less an option for me.

I wish there was a middle ground where I could have my phone be dumb enough to keep me from playing on it all the time, but secure enough that it makes sense for me.

[1] https://www.okta.com/blog/2020/10/sms-authentication/ I'm not affiliated with them, just the first article I found on the topic

I don't want a dumb phone. I want a smartphone without AI crap.

For 2FA try a Yubikey or similar hardware U2F device.

(opinion my own)