Well I don't see that link but there is plenty to poke through on that sight.
I know the list of early defunct UHF stations is very long because very few survived before cable became wide-spread.
UHF equipment was primitive and inefficient. TVs had poor UHF sensitivity and transmitters were unstable and inefficient. I worked at a U in the 1960s, we pulled 200-KW off the AC line to get 30KW into the coax. By the time it got to the antenna it was down to 18-kw and half the people in the city didn't know the station even existed.
Ironically, now 50 years later- with Digital-TV, UHF is where all the stations want to be because it works the best with digital.