Also if you really really hate two-factor authentication, e.g. due to psychological change resistance, there are multiple good alternatives like Bitbucket or Gitlab. Nobody is forcing you to use Github, and usually people do not even pay for it.
Nearly all resistance to 2FA is because of fear of losing access to the 2FA device. I believe it's a well-earned resistance, because they've done a terrible job of explaining that there are alternatives in that case, such as special codes that you can write down and put in a safe.
There is an unofficial method by using devtools on the desktop app, but it's been EOL for months and it may soon stop working completely.
They also nudge you to set up multiple 2FA methods. I have the app, a passkey, etc.
DoorDash: Every time I need to enter an SMS code.
UberEats: Same thing, SMS code every time.
Grubhub: No MFA ever. Wonderful.
Twitch: Every couple days I need to enter a code sent to my email (because I won't give them my phone number which they really really want me to give them).
Reddit: no MFA requirement...for now. Given how fucking garbage they've become I wouldn't be surprised if they start enforcing it soon.
Amazon: no MFA requirement despite sometimes asking.
GMail: no MFA requirement despite also asking.
GitHub’s 2FA gives you the option to use SMS. But even for the authenticator method you don’t need a phone, most decent password managers nowadays support saving (and auto-filling) 2FA tokens.
There’s also the option to print/write down the one-time codes. Though the latter would admittedly be a bother if you log out frequently.
Point being there’re many ways to go about it.
I really, really don't like being tracked, "filed, stamped, indexed, briefed, debriefed, or numbered", so avoid accounts as much as possible, and all the more so from megacorporations.
[1] Correction: I originally said 10-15 but I remembered a few that are in the Firefox password manager, like archive.org.