To a certain extent, yes.

I know someone who only eats chips and chicken nuggets. He's a grown man and had to be served a plate of frozen chicken nuggets at a wedding we were at recently.

I've always said that he only does that because his parents pandered to him when he was a kid. If I'd told my mum I was only eating chicken nuggets she'd simply have said "No, you're not" and that'd be the end of it.

It's a silky example but it's like cunts who say their cat only eats some stupid specific food. No, it fucking doesn't. It's just being a dick. Give it something else and it'll eventually eat it.

Now, if the kid then started to genuinely starve rather than finally crack and just eat normal food it's doctors, psychologists and hospitals time. But before then, it's probably just a kid being a kid and being pandered to into adulthood.