Re: re. bokeh
There's a fair chance that most phone users just want a subject's head to 'stand-out' from the background. Artists they aren't - they just want a nice picture of their friends. They won't be too fussed if this is bodged in software.
As we know, many Reg readers aren't most people.
It reminds me of the days of hand-rendering product designs - the object is drawn sharply, but often presented against a smudged pastel background (or similar). It makes the product images 'pop' out from the page for more impact.