I enjoy being able to see everything that I can get my hands on and have informed opinions, but my friends tend to have limited time and funds.
For one pair, all my recommendations to them thus far has seemed to resonate. I explicitly did not recommend Fun Home, but they went to go see it anyway (because it was critically well-received and has so much positive word-of-mouth). Not surprisingly, they felt lukewarm towards it at best and cold at worst.
They thought none of us enjoyed it because we weren't the target demographic. They thought that people who were less tolerant or less open-minded would find it the most impactful. Maybe that's true. I've lived in NYC all my life, was part of my high school's GSA, am currently an ally in my workplace's LGBT network, lost count of the # of years I've fundraised for AIDS Walk, and became overwhelmed with joy when same-sex marriage finally became legal in the US.
I felt no connection to any of the characters (and did not like the music, honestly). I thought you needed to have some relatable experience to any of those characters to feel an emotional investment.
On the other hand, our friend (who is LGBT) saw it before all of us, and she was really moved by it.
Who can say what is "good"? The only thing you can know is what you like and what you connect with, and even that's not always consistent.
There's a bunch of people out there who don't like it but don't bother to say anything. Forget the wording of the title, this was obviously just to start a lovefest. It is okay to have dissenting opinions, but I think in general people avoid chiming in when it's so heavily skewed a certain way.
TLDR; it's not too good for Broadway. It's fine. I'm happy it moves people, even if I'm not one of them.