It's literally the most surface level take. Does not even mention what CUDA is or AMD's efforts to run it
https://www.xda-developers.com/nvidia-cuda-amd-zluda/
But it is no longer funded by AMD or Intel
AMD GPUs are still supported by frameworks like PyTorch
https://rocm.docs.amd.com/projects/install-on-linux/en/latest/install/3rd-party/pytorch-install.html
While Nvidia might be the fastest, they are not always the cheapest option, especially if you rent it in the cloud. When I last checked, it was cheaper to rent AMD GPUs
It is, but it does have competition