That's a completes stream of incorrect info.
It does NOT install drivers that aren't mandatory. It does NOT make any pop-ups. Nvidia, is giving the software for free. They don't have a single application where they try to monetize you... they already profited when they sold you that gpu for 500$.
Geforce Experience does a few things, it helps you keep your drivers updated (you can also tell it to include beta drivers) it can optimize your game settings for (personally, I don't use this feature) and it now allows you to have ShadowPlay, which is far better than any gameplay-capture application out there.
For example, I updated to beta drivers using GE, which gave me a 10% increase in FPS in P3D2.2.