Don't get me wrong: I love ideas and ideation. However, it's one thing to have a great idea and quite another thing to turn it into reality. I think of ideas as just the beginning stage of a process. As a frustrated creative, it's super important that I am able to make and show actual artifacts that people can see and touch.
Because of this, I tend not to place a lot of value on having the idea itself. That's because ideas are often half-baked to begin with and require lots of time and effort to refine and bring to life.
People sometimes overvalue "having" of the idea and think that the details are someone else's job, elevating their sense of personal importance as "the idea person". I dislike this attitude, as it is frequently accompanied by willful ignorance, lack of relevant experience, and little desire to learn. If they do however can provide project guidance and clarity as part of the production team, then that's the kind of big idea person I can respect.