One important note: many games have a separate launcher that updates the game.
So there could be updates to the game and also updates to the launcher.
Both are different processes and they might have different icons.
Where users can go to any app website and download and install a new version, for drivers this is a bit more complicated.
Users have to search for the correct driver (correct hardware, correct OS, correct version like x64 or x32).
Even I have problems doing this (so I don't investigate the time) and I would estimate my skills to quiet well.
Next driver updates increase the stability of the system, increase the security and also offer new features.
So in my opinion a driver scan is a very important feature!