>>>They put their money into crypto and it's much, much harder to take it from them, provided they own the private key.

That's not exactly trivial - how do you store a private key in such a way that it's safe, accessible to you and only you, cannot be destroyed by your enemies, and can be passed on to your heirs upon your death?

Judging by the lifestyle of the playboy branch of the Bin Laden family[1], probably stick it in a safe deposit box at a bank in NYC or London.

[1] yes, there's such a thing: https://www.goodreads.com/book/show/2211931.The_Bin_Ladens

It's comparatively safer than holding millions in government-controlled banks, property which can be seized with the stroke of a pen, physical wealth like gold which is tough to store and move, and has value anywhere in the world (not many people in Europe care about your franchise holdings in Riyadh).

In contrast, if you buy bitcoins, when you flee the country you can bring your wealth with a memorized 24-word code or a slip of hidden paper, and people in other places will accept your Bitcoin.

They will accept it now. Not when everyone wants to sell. But yes, instead of having the state take it away, it's better to store some value in BTC.

Use Shamir Secret Sharing.

If you have enough trusted friends, that should work.

no, it's not trivial, but you can just follow these steps. https://glacierprotocol.org