Let's say, hypothetically, that I'm not a Nintendo spy. Let's also say that, still hypothetically, I would be interested in, or curious about, maybe, what would have been your first choice. Would you hypothetically tell it to me?
Not talking about pirating anything, btw. Just making hypotheses about a purely imaginary scenario.
It is actually possible to use Aegis for Steam, that's what I do. It's a pain to setup if you're not rooted (I think you need to use an Android emulator on a computer and then export the Aegis DB to reimport it on your mobile IIRC) but it's possible. Look at https://github.com/beemdevelopment/Aegis/wiki/Adding-Steam-to-Aegis-from-Steam-Desktop-Authenticator Steam is still very welcome to go fuck themselves with their shitty app, though.