Said teacher likely has a reason to further the myth that "top tier schools" have "top tier students." Academia is largely nothing but group think and elitism these days.
He's a professor who has spent his entire career at one low-ranked institution. If he has a reason for being down on his own employer, where he's tenured, I'm not sure what it could be...
(Also, he didn't state this as a negative or a positive. Just as a fact. "Different institutions serve different clientelle". You don't have to be a hotel snob to say that the Holiday Inn you manage isn't as nice as the Ritz, or a elitist that the youth swim team you coach has nothing on the US olympic program... some people -- particularly educators -- aren't obsessed with being "the best".)
(Also, he didn't state this as a negative or a positive. Just as a fact. "Different institutions serve different clientelle". You don't have to be a hotel snob to say that the Holiday Inn you manage isn't as nice as the Ritz, or a elitist that the youth swim team you coach has nothing on the US olympic program... some people -- particularly educators -- aren't obsessed with being "the best".)