The article says that the score was 104-1 at halftime. The winning team played all reserves and did not press in the second half, but still outscored the losing team by 57-1. I suppose that the winning coach probably could have recognized that this was a blowout and made the halftime adjustments after the first quarter, but given the difference in the teams’ ability, eit still would have would have been a very gaudy score.
This is a high school game, so it is expected that competition will be pressed harder than with younger kids. The coach did put in reserves and stop full court pressure. It is reasonable to make adjustments like that, but it is wrong and insulting to ask your players in the game to give less than their best effort. The article does not say that there was any taunting or acts of disrespect by the winning team. Given the way the losing coached whined, I think any unsportsmanlike conduct would have been noted, had it taken place.
I think the real answer is that these to teams should not schedule each other in the future, as they are at levels that are too different for meaningful competition to take place. But unless there are facts that have not been presented in the article, count me among those who think it is ridiculous that the winning coach was suspended.