I diagree. No, adult jon doesn't have the same personality as kid jon. And it is not because of age either. It's because of design, artstyle and writing for him. Jon was able to draw you in as a kid in a couple of issues, before. Bendis hasn't been able to do that with adult jon.so panel time isn't an issue.
Jon was goofy, expressive, quirky and energetic before. He isn't anymore. Therefore comes of as bland. He was a bundle of joy. He had a sunny personality. Now, he doesn't. Kid had a panel presence. Now he doesn't. .
Saying kid jon's personality is the same as adult jon is like saying dick grayson and clark kent have same personality.
This the best expressive sunny scene adult jon has been.
Compared to this
You can how dynamic he is. How emotive as kid he was with dialog and art.he went from placating the dog to scolding robin.
Not to mention the grounding factor and relatability of kid jon. He had to go to school, do chores, get home before bedtime, had homework.. Etc. He would get in to trouble with parents. He Wanted appreciation from peers. He also had bullies at school.now he doesn't have any of those things.
How can anyone relate to adult jon? Where is the grounding factor?