I'd rather have a colleague I have to sit down with and work on a problem for a few hours than one who is like the one you described. In the end it will still be net positive because we work as a team, we both know and understand the solution, if anyone of us was hit by a bus the product would still be maintained. Given we both know our shit and are at least good at what we are doing. There are very special cases where a prodigy, regardless of character, might be needed but most of the time, hire the people who are good, cooperative and have the social capability to bring up problems in a meaningful way.