Their overall average beer score on Untappd is 3.67 (out of 5). By comparison, DC Brau has a 3.67, Union Craft in Baltimore has a 3.77, Troeggs (also in Hershey) has a 3.79, Dogfish Head has a 3.84, and Other Half (multiple locations including DC) has a 4.23.
Is there a Mendoza line for brewery scores? DC Brau and Union may not be top shelf but both have very good beers in their line up. Just gotta avoid the ones that suck.
They both produce a fair share of unpopular beer styles, which tend to get lower ratings. Breweries that stick mostly to hazies, pastries, and fruities are going to naturally get higher ratings.
That said, the mediocre score for Strangeways is right on the money.