Not sure where you're getting that from. NVIDIA has supported professional desktop Linux usage since before anyone was doing AI on their GPUs. All of their GPUs worked well.

I've been running NVIDIA GPUs on Linux workstations in personal and professional settings for almost 20 years. It's been always been an extremely functional and high performance experience.

It's annoying that the drivers are proprietary, and have to be rebuilt during kernel upgrades, but they have worked very well for a long time.