People here aren't flying in the lower cabins, where the author of the original article mostly seems to be.
The 747 offers poor levels of comfort for those down the back for the reasons you rightly mention. I too want them gone as soon as possible.
Of course you're right for the vast majority of people on board a 747. However, as one of those fortunate enough to enjoy front-of-the-bus flying, my favourite seats across all aircraft are the window seats in the upper deck and row 1 of the 747, despite the age and scruffiness of the planes. I'll be sad to see them go, but know they're not sustainable long-term.