"His daughter, who is in her late teens, complained to him that because he has a job and is not studying in kollel, she will have a hard time finding an appropriate husband. This is just wrong."
Not only wrong but insane. What is an "appropriate husband" for her?
In her mind, an appropriate husband is one who intends to spend his adult years in full-time Jewish religious study.
Married men study in Kollel...unmarried men study in a Yeshiva...several Yeshivot have their own Kollel. However, typically, married students, study together. They don't usually study with unmarried students.