It totally does.

They make grave mistakes all the time. And they hide them. They lie about them.

They have their ego and career on the line.

And they don't have enough resources at their disposal, not enough hours, too many patients, and they are exhausted.

In short, they are humans in a human system.

In fact you are. You're speaking to one.

Your original statement completely ignores the massive amount of barriers put up during your training. From my own experience I can tell you that students are usually quite self aware that they are learning and on a short leash. The most egregious mistakes I've seen were almost always a result of understaffing and gaps stemming from leadership issues coming from the top down. The small mistakes and cut corners are from tired overworked people.

Nobody accepts "hurting people" as a component of training. It's an absurd statement.