Downshifting is usually bad I will agree.

How is putting the transmission in manual(override) mode and upshifting at 6000RPM instead of the transmission upshifting at the more fuel efficient (EPA) 4500RPM bad?

I thought it was better to quickly accelerate from 50mph to 80mph in 3rd gear instead of 4th gear, the only way to do this is to have the car in "3", but isn't this sort of manual shifting?

Why would it be harmless for the TCU to change the shift points when accelerating in "power mode", but not the driver to change the shift points when accelerating in "manual" mode?

Enquiring minds want to know!