BBW, your advice is actually similar to my advice when I read it. The only difference is you believe she wants him to have control over himself and I believe her need for control is an expression that comes from her...possibly from how she was raised or dealing with issues that made her feel a fear of loss of control. She still wants him to have confidence, of course...confidence in himself and in her.
A woman in a relationship with a man, she wants to see him succeed.
These fitness test, they are nothing bad, and nothing to be avoided, unless men avoid women altogether.
They are merely opportunities for the man to shine.
The man that shine's, he is the happy man in the sexual filled relationship.
If the man is not shining, there is without doubt, unhappiness already on both sides, resentment that needs to be dealt with, issues that need to be addressed.
Fitness tests, they shine the light on such things.
And I agree, your advice and mine are most similar, except you forgot to mention the spanking.