But KDE and GNOME are quite large organizations which gets financially supported by many tech companies. And they seem to have closer connections with NVIDIA engineers compared to sway and wlroots. I've even heard that NVIDIA was directly contributing the EGLStream backend code for Gnome and KDE (see the links below)

https://www.phoronix.com/scan.php?page=news_item&px=NVIDIA-B...

https://www.phoronix.com/scan.php?page=news_item&px=NVIDIA-K...

It's pretty sad that compared to this, sway and wlroots are being completely neglected by NVIDIA. And I think that is precisely why the sway project decided to ditch proprietary NVIDIA driver support.