What kind of worldly attachments can make a person's knowledge equivalent to ignorance, even if they are considered wise?

Chapter 50 provides a clear description of how worldly attachments can corrupt wisdom. It states that a person whose knowledge is actually a form of ignorance is one who is deluded by a lack of devotion and a fixation on material life. Specifically, it describes someone whose mind is constantly set on acquiring wealth and luxury, who is never satisfied with sense enjoyment, and who is always thinking about their wife and children. The text argues that such a person, deluded by these attachments, does not know their own welfare, and their supposed knowledge is completely covered by ignorance until they cultivate devotion.