You should, because major selectors of national champions, according to the NCAA official records book do, including the National Championship Foundation, Houlgate System, and the Helms Athletic Foundation; in addition to the following other selectors: 1st-N-Goal, Alexander Weyland, Angelo Louisa, BIll Libby, Bob Kirlin, Boby Royce, Century Football Index, College Football USA, George Trevor, Harry Fry, James Whalen, Jim Koger, Loren Maxwell, Nutshell Sports Football Ratings, Patrick Premo, College Football Data Warehouse, and Sports Illustrated's 1970 study on college football national championships, the latter being why the university itself recognizes it.
Why is Pitt recognized as a national champion in a 4-1 season cut short by the Spanish Flu Pandemic with a highly controversal loss to end the shortened season? Because the defacto national championship game was John Heisman's defending national champion Georgia Tech team coming north to play Pop Warner's Pitt in the most anticipated game of the season if not, until then, the century, and Pitt absolutely clobbered them.
It's not anyone else's fault you are ignorant about history or disrespect your grandfathers and great grandfathers. But you can start correcting that:
https://en.wikipedia.org/wiki/1918_Pittsburgh_Panthers_football_team
