Bitcoin's problem is exchanges and tether
you can't hide your coins, you can't cash out without going through the public blockchain
and I think anyone who believes guarantees privacy is wrong and will get a surprise.
but it is the fairest most stable form of money/currency at the moment
the problem is like all good things bad actors turn it to shit
but it is the most transparent form of money we had so far
I mean atleast you know how much there is
plus a good way to catch bad actors
it gives them the illusion of safety
and it's not like cash or gold was never used for nefarious purposes