Bt definition, a “Kollel” person who is a person who chooses to give up most of their parnasah to learn all day. If they were less into ruchnios, they would be more concerned with parnasah.
The fact that we are so rich today that we can provide a tolerable level of support for people learning all day is nice.
One is assuming the term “kollel” is used in the current meaning of a program to support people learnign all day. In the past, “kollel” was a community in which some members might be learning all day, and others working (with all receiving assistance based on need).