My 2019 had the E-torque. I did not like it. So much so, I bought a widget to remember the disable auto start/stop function, verse having to push the button every time I start the truck. This worked out well, but the device would often forget to do what I asked it to do, so it was not a perfect solution.
I would periodically enable the auto stop/start feature, to see if I might change my mind and use it more often, but would always disable it once again after allowing it to do its thing a few times. I can't remember the number of times I would have to fumble around restarting the truck at a green light while folks behind me were laying on the horn because the auto start didn't start the engine and I was stuck frantically hitting the start button, putting the truck back into drive, etc..... Maybe my truck was an exception, maybe not. Doesn't matter, it's gone, and good riddance. I specifically ordered my new truck, a 2022 limited, without the E-torque.
I have roughly 1500 miles on the new truck. The average gas mileage is nearly identical to the last truck. I live in a rural area and do not spend much time waiting for a stop light. So the start/stop feature probably does not play a part in the formula much, but having said that, gas mileage is the same so far. Shifting is very similar. I cannot say with any amount of certainty whether the e-torque made shifting smoother or not. Both trucks feel exactly the same to me. Lower rpm torque is also simular. I cannot say with any confidence that one truck feels different than the other.
I like not worrying about the extra "tech" the E-torque adds, extra wear parts, increased things to fail, etc. I find it unfortunate that the truck cannot be ordered without this feature. If you like it, good for you. But there are compelling reasons to not like it.