That really only applies to the TR580 in “D”. If you put these into manual mode & use paddle shifters, it “mimics” gear ratios by quickly changing the position of the drive & driven pulleys rather than a nice gradual change.
AFAIK, all of the TR680s mimic shifts, all the time. IMO, even though it would make the car feel less sporty, they should do the math for multiple speed ranges & figure out where to hold the engine at peak torque and where to hold it at peak HP for best acceleration.
On heavy vehicles like the Ascent, holding the vehicle at peak torque and max boost would more than likely make the vehicle accelerate much more quickly 0-60 than the fake shifts do.