Volvo tries to assign profiles (and Google logins) to each key so the idea is that the car is set up for you when you enter. They don't fully have it right (profiles only swap when the car is unlocked), so it's kind of pointless at the moment.
Out of curiosity. It is possible to use a modern Volvo without a Google account?
Great, not only do we have to carry an extra fob, we have to each carry one that individually tracks us.
My Polestar has this, and while I haven't tested it thoroughly, because my spouse rarely drives the car, it does swap profiles just by getting in the car with the fob that is linked to your profile.