In other subjects if you dont like them you can take something else
Not everyone likes math for example, if they dont like math there is a minmum to take and then you take something else. However with learning not only are people who dislike it forced to do it, they are many times forced to do more
It doesnt work, rather than have somone learn 8 hours a day, we can find other things that they are good at that can help the community.
A boy who cannot learn, but can do carpentry is labeled a Nebbuch