The most commonly used tools for imaging is iPhones. And as many/most of us know, Apple has added a portrait mode that digitally attempts to
replicate short DOF. And rumours say that they will add 3-D sensing to the rear camera, which will improve results, and we are going to be flooded with images with digitally synthesized
short DOF that actually looks OK, and will improve over time, probably eventually letting you
dial in the DOF you want.
Which of course will lead to endless discussions about the superiority of
real DOF vs. fake DOF.
I propose that if you want to successfully argue the case for dedicated camera hardware, you need to get away from the fringe concerns.
Now you are talking about actual depth of field here. This is entirely separate from the quality of the blur (bokeh)
Are you suggesting you don't care about controlling DOF? Because that would be just silly to my mind.
I do agree though, that in my film days, out of focus was just out of focus. I suppose discussions of the quality of it may have been part of how we felt a lens rendered as a whole, but I don't remember discussing it specifically.
Perhaps, as we become more demanding of our images, we start to drill down more into what makes one image appear better than another.
I do seem to notice the bokeh when I am watching TV nowadays. There is some beautiful cinematography and it does enhance the experience. For example, when a person is being filmed close up and you see the out of focus background, say cars and lights etc. Often find myself commenting on the shape of the specular highlights - much to the amusement of my other half who simply rolls her eyes!
So, I guess I do think that the quality of OOF elements (bokeh) has an impact on the viewer whether in video or stills.