Without permission from the government the Palestinian people can use Bitcoin but how they can get financial freedom is a personal matter and how they know how to use Bitcoin to benefit them
There is no financial freedom with a fiat financial system because governments and bank can restrict you with a number of rules. But bitcoin allows you to have financial freedom where you can send and receive millions of dollars without the need for approval from any authority. This is what financial freedom really means, but you can't expect the government to allow it.
Financial freedom is not meant because you can make a profit in the market for your investment and trading activities, that is something that should be outside the context of financial freedom.