It's not obvious if you call them bitcoin when that isn't their name. That's like calling 7-UP a coke.
ok, but 7-up adjacent companies are coke adjacent companies; canning, sugar, labeling ...
I don't know what you are saying. You can't mine bitcoin with a GPU. You can mine ethereum and probably other cryptocurrencies with GPUs. Bitcoin is a specific cryptocurrency. Nothing you are going to say is going to change that reality.