Not at all in my opinion. I consider David Gentry a friend and I am a big fan! His Murphy teams won in 2A, also. More impressive is they won a lot of titles prior to subdividing.
Regarding non 4A schools, 1A had less than 30 football playing schools in the classification prior to 1985. One year I think there were 25. Three game playoff. During the 1970's 2A and 3A had around 100 and 4A in the seventies usually. There was also the WNCHSAA which had 34 teams in about 17 counties the last year it existed in 1976.