For me it was similar to my reaction of seeing an all gay cast in last year's The Boys in the Band and (more recently) seeing Nick Adams and Max Von Essen as Whizzer and Marvin in the Falsettos revival. Knowing the actor is gay portraying a gay character lent more authenticity and truth to the role. Again, this was my experience -- I would not expect everyone else to feel the same way.
I would consider material that involves characters farting and interacting with bodily fluids like pee and excrement as raunchy.
Based on what I have been told (and I did speak to dozens of people in rush lines and at theaters), in March and early April word of mouth regarding Gary was toxic, painfully unfunny, actors trying too hard. Later in April and early May, it was more like actors connecting with the material, great schtick, an easy rush -- go see it.