My sister attended a one year religious course in Al-Huda after completing her masters 7 years ago. What they taught is how to be a Good muslim, How to be an example for others before you start correcting the society ills, Islamic history, Tajweed. Hadith collections, . They are not sectarian. She is now married with one kid and her husband is a IT manager in a public sector and both are as moderate and practitioner as everyday muslim is.
If someone can quote a specific which proves Al Huda education has negative effects in long terms than I can reconsider my position. Shooting of tangents, generalizing the whole incident because of extremist problem in Pakistan is not a proper way of winning an argument