I wouldn't take a penny from either. It's a wide world with an unprecedented amount of capital in the hands of wealthy investors. There are plenty of funding sources that are neither surveillance monopolists nor government administrations that torture and murder journalists.
Even if that happens, that's fine. Softbank has no incentive for your business to fail. The company that dies, is more money out of the visionfund.
On the other hand, FB does have an incentive. Sure, they lose that investment, but they gain their own internal company that they own 100% of which has eaten your marketshare.