Jazar – “Do you realize that Rav Ovadia Yosef and Rav Zalman Nechemia Goldberg both approve of the prenup. They are not small Rabbanim or MO. Just accept the fact that there is a machloket and please stop pretending like your opinion is the only valid one.”
From page 1:
“Rabbi Gedalia Dov Shwartz is definitely MO. You seem to assume that just because he is a talmid chochom and a well regarded posek, he must not be MO”
Practically No Litvish or Chassidish Rabbis believe in prenups!
So if you’re in this classification, there is No argument.