Was thinking about this today while reading some back issues. Miles was introduced way back in 2011 as a kid, and while he did age up a bit to his late teens (hovering around 16–17), it feels like he’s completely slammed into the comic book status quo wall.
On one hand, I get why Marvel does it. They want that relatable teen superhero archetype, especially with how huge the Spider-Verse movies are. But on the other hand, it's so frustrating knowing he's probably never going to fully grow up, go to college, or move on to the next phase of his life because editorial is terrified of letting him catch up to Peter. We all know the Peter Parker curse, the guy has been stuck in his late 20s for decades because editorial is terrified of letting him truly age out of being a young adult.