Re: not "much of the world"
I think you may be making a bit of maths error there.
I believe there are at least four iPhone models and two iPad models. Many Apple fanbois will have owned more than one of each model and possibly a Mac too so the total number of humans is likely to be far fewer than you think.
And even if I'm wrong, which I doubt, a mere 2% is not "much of the world" in the slightest. I'm sure a considerably larger group of people discovered via TV or radio news that Big Jobby had died. A larger group doesn't give a flying f**k and an even larger group still probably has no idea who he was.
The latter two groups are made up of people more worried where their next meal is coming from, concerned that they may get shot for belonging to the wrong social/religious minority or whether they'll ever get electricity and fresh water in their village.
But hey, don't let me ruin the enjoyment you get from owning your precious shiny toys.