You don't have to trust any coinjoin coordinator you choose since no information is ever provided to them.
Except you do have to trust zkSNACKs not to censor you after they are done paying blockchain analysis companies to spy on you.
There are other blockchain implementations which do not have this weakness. Any sensible person will use one of them instead.
What "weakness"? What do you mean "blockchain implementation"? You literally are making no sense whatsoever.