Perhaps not even when you use an Nvidia product like if I buy Nvidia hardware but don’t use their software (i.e. use open source drivers instead). I don’t know enough about CUDA to say if you’re not using Nvidia software (normally, the topic discusses a reverse-engineered one which doesn’t infringe on Nvidia’s copyright of their software).
Perhaps not even when you use an Nvidia product like if I buy Nvidia hardware but don’t use their software (i.e. use open source drivers instead). I don’t know enough about CUDA to say if you’re not using Nvidia software (normally, the topic discusses a reverse-engineered one which doesn’t infringe on Nvidia’s copyright of their software).