In the same way that coaches often need to choose between adding a new general athlete and an experienced position player to their roster, employers often have to choose between hiring someone with high potential who can quickly learn specific skills and someone more experienced, but whose expertise is narrower. Sometimes this is code for whether a firm has a preference for younger employees that they feel they can mold over older hires who may be set in their ways.
Smaller high growth companies tend to have a preference for general athletes because it gives them confidence that employees will perform at a high level even when their responsibilities constantly changing. If you know you need someone to be the best at something, get a great position player. But remember over specialization can be risky if you later change course.