I understand what you are saying but 1) It wasn't just injuries and 2) They just found out mid-way/late in the week. There is a big difference between backups becoming starters for several games and literally starting your first game in a semi-final playoff game.
Nobody throws at Logan more than once a game so the opposite corner is an extremely important position that Moyer was playing well in. Peyton Lewis was finally healthy from his awful ankle injury earlier in the year and had four sacks in half of a game the last time he played against a very mobile QB. Cameron Martindale is the best defensive player in all of 4A imo... just an unblockable game-changer.
Will Salem fans think this made a difference in a game where one play going different at several different parts of the game is the difference between winning and losing? Of course they will, that is logical. Should Broad Run players and fans care at all? No, they should be happy that they won and get to play in a state championship game.
Before the season started I though that Broad Run was the championship favorite. Defensively they were better than any team this season (including Martinsburg) against Salem's rushing attack. Offensively Griffis was easily the best QB that I have seen this year and the difference in play at this position was the biggest factor in the game.
I also thought the Broad Run coaching staff did a tremendous job. Had some very unique quick motions and shifts to cause mismatches and create some out-flank opportunities and were aggressive and tactical in their approach, which you have to be against Salem.