If you want to "trust the math"
yes, we want to trust the math. that is what cryptography is for..is what crypto currency is for.
back to privacy..
.........
If you trust the math, why don't you let the math do the privacy too?
What should be better, the privacy done for you by some people you don't know they're honest with you or not, or the privacy done by the network with mathematically proven methods?
Unless there are bugs (and no big issues were found afaik) I tend to like the second...