Bitcoiners created most of Moneros privacy tech.

Liquid uses a version of it to hide their amounts, and the recent Silent Payments for Bitcoin are another form to hide receipients.

Unless you think those are a farce too?

RingCT(amount privacy) and Stealth Addresses(recipient privacy) are pretty damn solid. Both zero knowledge.

The weak part is Ring Signatures(sender privacy) because it's more like a coinjoin.

FCMP upgrade later this year will bring it in line with the other two.