Sometimes a play is just a play, i.e. entertainment.
The comparison to Shakespeare and Sophocles misses the mark. Both of these playwrights wrote for the common man. Hamilton is a rarified bit of pietistic foppery intended for the liberal/progressive elite.
People who take art seriously take it personally when someone pisses on their leg and tells them it’s raining. No one’s insisting that you care, but please understand that the culture is important to some of us.