Tell us from which community you are, it will be more clear for us to understand you
I'm a boolberry investor and I have followed the crypto_zoidberg's work in development of his new currency CN + POS.
What is the problem with this?
But today I met fudcoin, so I created this profile and I met shadowcash by that thread lol
I believe you're comparing apples to oranges. The trusted setup is a weakness of Zerocoin and Zerocash.
The shadowdevs decided to integrate zero knowledge non interactive proofs on top of ring signatures as a solution to the trusted setup weakness of the ZK-snark theories.