More gatekeeping, more no true Scotsman fallacies, more bitter cope.

You can absolutely take pride in having raised your own cows. But the guy down the street can also take pride in having cooked his own steak. In fact, the guy down the street might actually be a better chef than you, even though you know how to breed cattle.

You're wrong because you are making the wrong comparison.

In this analogy, The guy down the street didn't cook his own steak. He told someone else to cook the steak. And then claimed that he himself cooked it. Telling himself, "wow, I'm a great chef!". When In fact, he did not cook the steak.

Your greatness as a chef isn't measured by how well you manage restaurant kitchens. That would be a great manager. Your greatness as a chef is measured by actually cooking yourself. Claiming other chef's work as your own would be dishonest and self-deception.