I actually really like this feature, but everyone has their own reasons.
@ALFATECH, most FCA vehicles do have that option, not sure why the Alfa's don't, but I'm sure it could be put into a software update.
Anyways... It is possible to have it disabled. If you have a competent dealer nearby, they should be able to program it to stay in a fixed position.
They accidentally disabled it on my Giulia once when I took her in to have a bad passenger seat motor replaced (apparently they both run off the same seat control module or something?) and I immediately took her back in to have the feature re-enabled. After talking to one of the Techs, we discovered that it's pretty simple to do. I ended up taking my Stelvio in to have the feature disabled because I actually have passengers in the back seats sometimes and it's just not really necessary in an SUV.