If by learning you mean that he wakes up at 5:30 am and goes to learn then and doesent finish till 11:00 pm then the parents should let him learn. If he would be one of these fakers that just sits and says they are learning yet they are just busy on their cell phones the whole day and just sit there for shidduch purposes only then maybe he should go get an education.
I have no problem with people who want to learn but let them do it lishmah! and not waste peoples money.