Because this is the best weather of the year to play baseball. I have always found it ridiculous that other states don't play summer high school baseball. As a close comparison, Minnesota's high school baseball season is basically a joke.
Regardless, and in a rare occurrence, in general I agree with
@crablegs1 here. Ben Kueter doesn't need to wrestle Fargo to get the attention of college recruiters. He's not wrestling for dollars--he's going to have his pick of schools if he wants to wrestle. Additionally, this is a case of specialization, not a case of being accommodating to a multi-sport athlete. It's baseball season, and the most important part of baseball season, so (in general) that should take priority for any athlete. In-season sports should be priority #1.
That said, each case is different and nuance is an important factor so I'm not going to be critical to Ben Kueter for it. This is between his high school coaches and teammates.