Some shares may well proved to be overpriced, but I personally won't be shorting NVIDIA right now. They are struggling to keep up with incredible industry demand. Compute is seen as the big limitation on our progress in AI, so demand should only keep increasing in the foreseeable future for NVIDIA products.
Whether individuals such as you and your friends choose to use AI or not doesn't really matter. The bigger picture is AI will be everywhere, replacing people, increasing output, improving scientific research, reducing costs and potentially prices for consumers. Only the individuals with AI skills may still have some employment.