Heroes accidentally stunt the growth of people around them

When you're eager and capable to do something yourself, it's easy to accidentally leave people behind or disempower them.

Because the hero can just do it, and do it faster / better than the other person.

But getting good at something takes practice and hands-on experience.

If the hero says "Oh I can just do it" or while the other person is huffing and puffing to keep up say "while I'm waiting for you I'll just quickly do this other thing" making the non-hero even more behind.