A business is only as strong as the people that make up the organization. You have to be sure that those you choose hold responsibility and can handle the duties placed in front of them. Choosing someone for any reason other than their ability to get the work done could be a liability.
However, once you bring the person on, it’s now up to you to groom them to be a functioning member of the team. After they have been integrated you must make clear their role, their purpose and your expectations. Leaving colleague to languish without direction is a two-fold problem.