For a long time 2fa apps (other than Bitwarden and maybe some others) would lock you into the app and not let you export it. Websites don’t usually expose the text version of the code, just the QR.

I recently switched from Authy to 1Password for 2FA, requiring me to set up every single website's 2FA from scratch, and I found that every website I use provides the text version of the code. It's hidden behind a "having a problem scanning the code?" link. I didn't need to take a single screenshot of a QR code; I was able to save the text version for them all. Next time I switch, it'll be easy.

I've never found a TOTP site that didn't also have a "click to show the code" option. It's usually in small print at the bottom, but it's there.

It's easy to screenshot or physically print a QR code during setup.

There are desktop totp apps that will decode the QR code from a screenshot in the clipboard.

QR has trivial format and code is easily extractable.

Almost all (not you, steam) allow saying "I cannot take a picture" or "Enter manually"

But you're right, it's not perfect but has gotten better. Just in time to be of no use thanks to email BS.