My impression is the same. To train anything you just need to have CUDA gpus. For inference I think AMD and Apple M chips are getting better and better.
For inference, Nvidia/AMD/Intel/Apple are all generally on the same tier now.
There's a post on github of a madman who got llama.cpp generating tokens for an AI model that's running on an Intel Arc, Nvidia 3090, and AMD gpu at the same time. https://github.com/ggml-org/llama.cpp/pull/5321
