OK, so you can’t use your money in a way that’s infeasible to achieve or in a way that gives material support to terrorism. Is there a point you’re trying to make beyond that?
There's plenty more where those come from. Society rightly puts limits on what you can do with your property after you are dead. By analogy, there are legitimate limits on what you can ask your successors to do with your bodily remains - and it makes perfect sense to set sensible defaults.