I think there are two totally different hashkafa’s being discussed here and being used to argue against each otI her. I see that some people are bringing the hashkafa of yeshivahs like YU that follow R’ Shimshon Refael Hirsch’s teachings of Torah im derech eretz. Others are following the hashkafas of yeshivahs such as BMG who encourage long term full time kollel.
Its silly to bring proofs from the Rabbanim that lead one group to people who follow the Rabbanim of the other.
That’s why I think its better that each person should just ask his own Rav in order to get the answer that is appropriate for his mehalech.