Its not really just that AMD drivers are not that great (they are not) but they have been stable for a long time.
Its that nvidia relentlessly works with game developers to make sure their graphics tricks work with nvidia drivers. Its so obvious you miss it. Look in the nvidia driver updates they always list games that have fixes, performance ect. AMD never (used?) to do this they just gave you the drivers and expected developers to make their game work with it. The same strategy that MS used for their OS back in the 90's.
Thats at least how things got where they are now.
The whole “improve a game’s performance on the driver side” thing: does AMD simply not do that at all? Or just far less?
AMD provides this. Example: "Fixed Issues and Improvements
Intermittent driver timeout or crash may be observed while playing Warhammer 40,000: Space Marine 2 on some AMD Graphics Products, such as the AMD Ryzen™ AI 9 HX 370.)
Lower than expected performance may be observed in Delta Force on Radeon™ RX 7000 series graphics products.
Intermittent stutter may be observed while playing Marvel Rivals when AMD FidelityFX™ Super Resolution 3 frame generation is enabled. "
https://www.amd.com/en/resources/support-articles/release-no...