He is just completely exhausting. Friends will sometimes see this and say "Oh, it's kind of cute." Maybe it would be, if it weren't ALL THE TIME.
Anyone else?
Kind cute, maybe. It may also be kinda ODD, as in oppositional defiance disorder.
ODD has very specific diagnostic criteria; I wouldn't suggest that it's the case for most intense children.
As recently discussed on another thread, children with anxiety or ASD can also be prone to this kind of inflexible thinking. And many gifted children without disabilities can be intense about their ideas, as well.
