The family members of mine who are in Kollel in Israel have jet-setted back and forth between Israel and the US more times that I have , They do it at least a year, if not more
Because they are “playing house”, just like anyone else being supported by Mommy & Daddy. There is no comparison to a real Benei Braker.
Next thing you will tell me is that they live in Arzei, Ramat Eshkol, Maalot Dafna or one of the other “play house” communities. Maybe Mommy and Daddy bought them a house in Beitar or Ramat Bais Shemesh (which is a good investment, and still under Mommy’s name).