Stuff that was created just for demo purposes is unlikely to have been as rigorously tested so I'm not sure it's necessarily a good idea to throw absolutely everything in there just because it's available; and you know people would quickly start to want all sorts of other things to be added, such as the above!
Most likely so.. Quite the misleading advertising to a degree but just as said, wasted potential if it's not implemented.
I would disagree that it is wasted, if it helped in better advertisement of the DOS2, Larian needed every bit of help that they could get from supporters.
And I agree that if it is just few animations for demo and not properly tested then better that they dont put it in. Plus as stated if they would listen to every whining from us for every little thing...... the DOS2 would become something much much much more worse.... (imagine mixture of ubisoft+Uwe Bolt+ea)