I think it's useful outside of an academic thought experiment.
It hasn't encouraged me to get a bigger tv, quite the opposite. My takeaway isn't that I need a bigger tv, it's that I can get by with a smaller screen and lower resolution.
Except that at the very top is a slider that gives you a recommendation of screen distance to screen size. I think a lot of folks will encounter this and stop there.
Maybe, but the article is still useful for people that read it in it's entirety.