Yeah, it won a bunch of awards (Most of which should have gone to Come From Away, but I digress) and is still running on Broadway. Personally, I've always loved the music, but have never seen it. Which is why I was so mad to hear they cut some of my favorite songs from the movie.
With Platt's age, obviously Hollywood has been casting 20-somethings and older as high schoolers for ages. But in this case, age is really just a number. It all depends on how old you LOOK. And Platt looks older than his age, making him look WAY older than the rest of the cast playing his classmates. Compare that to his boyfriend and fellow Broadway Evan, Noah Galvin:
Galvin is only about a year and a half younger than Platt, but he can still pass as a teen (or, at least, Hollywood's version of one). The problem isn't how many trips Platt's taken around the sun, it's that he sticks out like a sore thumb next to his co-stars.
Which makes the whole thing feel like a massive vanity project for him (even more so when you hear the producers and directors talk about the changes they made for the adaptation).