I agree, and I have been doing that, but it’s not the same thing. It just ups the intensity, but it doesn’t adjust the watts it is reporting, which is the key thing. My Kickr is WAY over reading despite my best efforts to calibrate it. I need to tone down the watts it is reporting.
It works fine in general riding where I can use my P2Max as the power source, but that doesn’t work in workout mode.
I am thinking that perhaps I should switch to TrainerRoad they apparently do this quite well, although I like the interactivity of Zwift.