Support is needed when marrying any Yeshiva boys.
BTW many parents will share support from both sides (girl & boy) plus many many CC guys do their histadlus in parnasah too. There are those that tutor, lein on Shabbos, selling esrogim, hashgacha, involved with Senior nursing homes and kiruv activities.
Also CC life in Queens is more on the simple side than in other larger Yeshivish kehillas. The cars, apartments and furnishing are nothing special and Jewelry is not abundant. Simpler life style in all.