I don't see how it's short-sighted, mainly factual. Integrated graphics are cards are rapidly catching up to only the lowest end discrete cards available.
How many people sticking solely to laptops were ever doing much gaming on their desktop back when they had one? I don't think it's useful to conflate all the people replacing their crappy old Dell desktops with a new laptop to people replacing gaming desktops with gaming laptops.
>And yes, I very much can have an immersive experience on my 15" display, as can many other people.
I'm sure plenty of people would have an immersive movie watching experience crowded around a 15" laptop as well, but I'll stick to my large screen TV in the living room personally.
You are clearly out of the loop when it comes to PC gaming, I suggest we stop this discussion before you start saying even more embarrassing things.
And yes, I very much can have an immersive experience on my 15" display, as can many other people. According to the Valve hardware survey, only 32.61% are running at 1080p; most of the rest have to do with less. Giant monitors aren't as ubiquitous as you might think.