It feels unfair to all those people to put a kid on the bridge instead of an adult in the middle of their career.
It’s partially a testament to what a prodigy he’s supposed to be, but it’s also an artifact of Picard’s friendship with his mother and late father, and a soft character progression for both of them because up to that point no children were allowed on the bridge with him at all
Trek fans in that era got hung up on some weird stuff for sure. I knew several people who hated Neelix for basically the entire Voyager run mainly because of that one early episode where he acted jealously even though he got over it by the end of the episode lol