In my experience they just work once you install proprietary drivers
That's not my experience with dual-GPU (Intel+Nvidia) hardware and multiple displays, where the standard xrandr functions are often used to modify the output configuration.
In my case, the Nvidia GPU is supported by Nouveau, so I can compare it with Nvidia's proprietary drivers "side-by-side". With Nouveau, display output configuration and per-application GPU selection both "just work" (I did add a nouveau.config
kernel parameter to enable acceleration). I've never been able to make the proprietary drivers do those things reliably.
So I suggest that users with simple single-display, single-GPU systems are likely to have a better experience with the proprietary drivers.
As is the general consensus here, I do not plan to purchase any Nvidia GPU hardware in the future, especially considering that more recent Nvidia GPUs now require signed firmware, making Nouveau support impossible.
As I mentioned in another comment, in my experience Nouveau does a much better job with multi-display and multi-GPU systems than Nvidia's proprietary drivers. Unfortunately Nouveau's actual hardware support is somewhat limited, so that is only relevant for a subset of Nvidia GPUs.
I, too, don't want any more Nvidia hardware.