Should the person who comes up with an idea also be the one who straight out of the blocks evaluate its desirability, feasibility and viability? Probably not due to the obvious risk of bias. It is also why we have some tools for ideation and another set of tools for assessment and validation.
The really funny thing about the article in Harvard Business Review though is the finding that companies tend to put an excess value on ‘ideas’ presented by the upper tiers in the organization, while ideas from the floor tend to be oversold and thus often not really gets taken under consideration. It is actually thought provoking when you think a bit about it.
It seems like a big potential loss. Experience shows that the closer people get to the problem through their day-to-day jobs, the more valuable ideas for improvements they come up with. Somebody in upper management should apply their sales skills to help the people downstream sell their valuable ideas the right way.