As someone who has dealt with a severe, diagnosed anxiety disorder for the past 6 years, I too feel very polarized by the musical and it's attempt to comment on mental illness and suicide's place in modern society without taking any responsibility for how it is handled. I have seen the show multiple times in attempt to understand where they intend on coming from, but I feel remarkably displaced and alienated each time.
The creators and cast have stated over and over that Evan's illness is unclassified - so to all the posters assuming the show intends him autistic, etc, you are wrong. By having Evan referred to as "socially anxious" is a severe disservice, as his condition is obviously much more intense than that - he tries to kill himself - this is not an example of someone who is merely socially anxious.
There is no justice for Connor Murphy, and no repercussions for Evan Hansen -the theme of "You Will be Found" quite literally appears out of nowhere, and does nothing to solve any of the shows core problems. What is the actual theme of this show? I would argue an extreme answer could be: "lying will cure your anxiety/mental illness," as in the final scene we meet Evan one year later - new sense of style, his ticks are gone, he's self proclaimed "better," and hasn't had to answer for his actions.
It's come to the point where I just accept that people like this show, but damn do I feel it is flawed and at times, sending dangerous messages about ways to cope with mental illness. I think it stems from the fact that I assumed I was supposed to relate to Evan Hansen more than anyone, but I literally want nothing to do with him. I can't stand him, truly.
Just my thoughts. You don't have to like them, but please, do not ever say "It resonates with everyone who sees it (even those who may not like it) in very deep, textured and nuanced ways." again, and like our antihero Evan Hansen, you are lying to yourself and hiding from the truth.