Don't think that's true. The drivers are bad (not sure terrible is fair, they have improved a lot) esp for older directx etc games. But Vulkan support is pretty good and that's all you need for LLMs really.

I don't know about LLMs, but I tried an Intel card when Ubuntu Wayland couldn't initialize a 2 year old Nvidia. It just works.

Everyone has terrible drivers here aside from Nvidia.

Intel looks like they'll leave the dedicated GPU space, so it's a bit doubtful if the drivers will ever catch up.