True but, if you read the post again you quoted, you will see Chevy didnt have the 6.2 at the time. I bought very early. It was hard to find in the Sierra.
I have a 2019 Sierra AT4 which I got because it doesn't have all the chrome. I like both trucks but I prefer the 10 speed transmission which wasn't available in Chevy, so I have the 6.2L with 10 speed. The tailgate is not a gimmick to me as I use the features (yes plural) all the time. The camera system was also great on the sierra. I guess it was more about what they delivered than the looks for me.
The tailgate isn't a gimmick by any means. I use it all the time and I use it in snowy areas. The road treatments have not made a difference so far in its efficiency or quality. As for the OP, it would be nice though I've not had a problem because when I've used it as I've not had enough room for it to fall forward at a stop. I've loved the truck especially now they have the front camera fiasco fixed for me.