This, and nothing prevents an ex-spouse to "challenge" the prenup. If you are the wealthier one, you will have to pay for your ex attorney's fees on top of yours. Lawyers on both sides will play this game, filing motion and racking up your bills until the wealthier spouse (usually the men is completely dried up).

See the current case of Dr. Dre which has to pay $1.5M of his wife's attorneys fees as she is challenging their prenup : https://www.complex.com/music/dr-dre-ordered-to-pay-1-millio...

For Dr. Dre who is a billionaire it is a painful lesson. For most of the average middle class men, you will end up broke sleeping in your car. Bitter women can use this "scorched earth technique" as a revenge because they know that at the end of the battle, once all the family's assets have been spent on lawyers, the wife will still get spouse and child support as a safety net.

It also only applies to assets you held before not including appreciation. So if you were bold enough to hold crypto from 2012, got married in 2015, and got divorced this year… bye bye all your money.