What was the point of having that whole storyline of Amy being pregnant, the traumatic birth, etc. only to pretend that Joshua (https://boymeetsworld.fandom.com/wiki/Joshua_Matthews) didn't exist? He’s rarely shown or mentioned at all with the exception of the series finale (https://www.youtube.com/watch?v=wp0-7QerYBo&pp=ygUdYm95IG1lZXRzIHdvcmxkIHNlcmllcyBmaW5hbGU%3D), when Cory delivers some words of wisdom to him before his departure.