LogFAQs > #962470008

I haven't seen it personally but everyone dunks on it due to several reasons:
1. Ben Platt plays Evan, despite being obviously in his mid 20s. The makeup or CG work also makes him look older and weirder.
2. They cut songs so now a majority of the songs are sung by Platt. Especially egregious was they cut Anybody Have a Map, making Waving Through a Window the very sad and dramatic opener.
3. The side characters are shoved off to the side.
4. Evan never gets called out for his actions. Good For You is cut.

Of course, watching it yourself can give you a more unbiased look, but yeah