No - I'd say he is arguing why it is more fun to learn more. Not "can be".
I think that is part of the issue with the communication - his writing implies that he knows better than the student whether or not the student is deluding themselves or being honest with themselves.
Yes... but time in this world is finite, so for whatever learning you do there - you've lost time that could have been spent elsewhere. Which is "better" is an individual and subjective opinion for each person to develop for themselves.
For every benefit, there is a cost.
I think we both may mean the same, just with different assumptions in mind.
Your point seems to be based on the assumption that the student does know and is aware of what he wants.
My point is: that may not always be the case, at least not consciously.
In that case, I might be tempted to make excuses and feel OK with learning "less" or being narrow minded - but I may discover that in fact I am more narrow minded than I want to be.
Like your golf example; who really aims at a specific Handicap like 30?
OK, let's assume I really aimed at that handicap for whatever reason, like I don't aim at PGA, just wanna have fun.
Being able to feel and foresee where the ball would land more precisely - would that be an improvement? To me: yes.
And even if it did not improve my handicap, it still would be more fun to me.
So, the other way round that means: If I had told myself "I am happy with my current handicap - no need to get a better feeling where the ball lands," then wouldn't I have made an excuse, or even lied to myself?
This is what I meant; not in the sense of scoffing, or judging others - but making me judge myself; am I honest with myself?