Interesting - one of the most single-mindedly arrogant engineers I ever worked with was an absolute zealot about CUDA.

Could not stop talking about CUDA, and why everything else was terrible, and how nobody listened to him, and how that was because they couldn't handle the truth, and how he could solve everyone's problems if they would only let him, on and on. He didn't last that long at my company.

Maybe he was taking his CUDA pain and pushing it onto other people.