How do worldly attachments like family and money affect one's spiritual knowledge?

According to Chapter 50, worldly attachments are a significant form of ignorance that can completely obscure true knowledge. The text states that a person whose mind is fixated on wealth and luxury, who is unsatisfied in sense enjoyment, or who is constantly thinking of their wife and sons, possesses a knowledge that is merely ignorance. Even if such a person is considered 'wise' by worldly standards, they are deluded by these attachments and do not know their own spiritual welfare. It's explicitly mentioned that as long as a person is without devotion, their knowledge will remain covered by this form of ignorance.