Markecib said: "This also makes me question what’s the point of the Dad? He’s pointless and not needed since we see no other parents, just a high school teacher.
I think act one could’ve ended a song earlier but they tried to give the Jeremy character a moment that just doesn’t land."
The interesting thing is, in the original book, the mom and dad were both a part of the story. The main purpose I can think of for keeping the dad would be to demonstrate Jeremy alienating himself even more from his friends and family, kind of like the argument between Evan and Heidi in Dear Evan Hansen, right before To Break In a Glove (although the stakes aren't as high in BMC as in DEH). It also gives Michael an excuse for coming back to help Jeremy during the play.
I remember Joe Iconis saying on Twitter that Loser, Geek, Whatever was to kind of clear up Jeremy's motivations for abandoning Michael at the end of Act I, realizing that they had never given Jeremy his own true solo moment. A few of the lines in that song are actually directly from the book - one that comes to mind is the line "I even got some blood flowing/With no computer screen around," which was phrased a little more obscenely in the book (but I digress).
"I think that when a movie says it was 'based on a true story,' oh, it happened - just with uglier people." - Peanut Walker, Shucked