Its because that's what makes Spider-man different to other heroes. that he is a kid. The MCU don't have any other kid superheroes currently. so why would they age him up to independence?
.
I think this is the aspect alot of fans seem to miss about the mission statement of these new films.
In the Maguire and Garfield versions, Peter was basically a grown man, and
looked like a grown man.
Yes, he was supposed to be 18 or 19 , but let's be honest, he was a young
man, in those films, and the struggles and tribulations were those of a young
man.
Balancing a Job , College, finding a woman he wants to commit to, discovering the man he wants to be , Balancing his commitments to his work, the city, his family, his love life etc. , those were all rights of passage as a young Adult , not of a child.
Now Peter has dealt with those struggles as a teen too depending on which version we're talking about. He does struggle. But he also has friends. He also enjoys swinging through the city and has fun as Spiderman, even though it can be a burden to him.
He does look to certain people for guidance and he doesn't think he has all the answers. He's in constant doubt and while he may make his costume alone and his gadgets alone, he's not a loner. The Spiderman myths are filled with humor and funny moments. Even the ASM films had
some comical beats to it.
He's not Batman or Bruce Wayne brooding on a rooftop. He's Peter Parker. He has the struggle and pain, yet he also has the joy, friends, and love. He's not one thing or the other. He's both. That's what's made the character enduring.
He's the every man to be certain, but that means he has a flaws and our strengths, he has our highs and our lows.
Yes, the new films haven't dealt with him mourning Uncle Ben, or dealing with holding down a job, or being in a love triangle with his best friends girlfriend, or feeling depressed. Alot of the aspects of the myths that were emphasized in the other two versions haven't been highlighted in this version. That's clear.
That's a creative choice and how one responds to it is gonna depend on their own tastes.
At the end of the day, I'm going to judge the films based on whether they've done justice to the Peter Parker character and whether or not they've given us good films.
The answer from the majority of the GA and critics is yes on both. There's no denying that.
There's always room for improvement on any franchise, and any could go sideways. But so far, I finding it hard to see a fundamental flaw in these new films.