One thing these writers never consider is that if Ollie wins another championship in, say, the next 7-10 years, he'll be well on his way to becoming the one of the greatest coaches of all-time. A 3rd win over 20 year period and he'll be a 60 year old at the top of his game. After that, he's immortalized.
When you think about the NBA, there is Pat Riley, Red Auerbach, Phil Jackson, 3 top coaches, and maybe people think of Popovich that way, but KC Jones, Tomjanovich and Chuck Daly aren't really recalled with the reverence of let's say a Dean Smith or even a John Thompson. The names of top NBA coaches are few and far between.