OP, fiat and crypto goes together. You can't spend crypto without fiat and you can't buy bitcoin without fiat. What I mean is this as long as you are rich,you can use your fiat to buy as many bitcoin as you want. If you want to buy a house with your bitcoin and the seller says he does not accept bitcoin,you have to pay him in fiat.
So back to question. which is preferred? Married to fiat rich or crypto rich?
Riches comes from God at the right time because we can't force God to go against his will. All fingers are not equal,in the sense that it is not everyone that will be rich,because everyone has its own definition on riches. If you are looking at riches before you get married, you are a gold digger, and not a lover that want a happy home because if the riches fades off,you will also fade away from your marriage. I might be broke today but become wealthy by next year,so how will you know this. Africa is where riches is put first as priority instead of love,when they are looking for who to get married to. Which shouldn't be encourage because it useless.