Maybe for you. Kernel 6.6, Nvidia driver 545 (also tried 535), RTX 3080, GNOME or KDE Plasma, two WQHD 165 Hz monitors. Got flickers in certain applications (for example Steam or some Electron apps), apparently related to how long they need to draw.
Along with Baldur’s Gate Vulkan API halving FPS compared to Windows/AMD on Linux, or getting black models in DX11 (DXVK), certain games straight up flickering or showing other glitches.
YMMV of course, but I find it hard to believe people have literally zero issues unless they have a very limited use case for their system.
I switched to AMD for Linux and while it’s not perfect either, it’s so much better.