Are you sure you know what you are talking about? We print gradients all the time with screen printing. CYMK, simulated process, and just plain old gradients in a 1 spot color job. Make sure if you are making statements that they are true.One more thing...of course, two other considerations are:
Keep in mind you can't really print gradients with a screen, so if you're printing images or pictures, you're better off with direct-to-garment printing.