We also need to get some facts straight, when zkSNACKs looks at addresses on the input side, it have the right to determine who it will let into it, since it is a centralized mixer either way, but it can no longer track outputs as some of the naysayers here are saying.
The problem is not that they, as a company, decided to start blacklisting transactions on the input side (they certainly have done that before, just for different reasons), but that the privacy-oriented company collaborates absolutely voluntarily with adversaries (blockchain surveillance companies) whose business model is to make revenue by infringing of privacy of bitcoin users and selling their data to corrupted governments, dictators and those who bid more. zkSNACKS is no better than those evil companies and persons because they are sponsoring censorship, and attacks on fungibility and privacy, they take money from people willing to gain some privacy and use it to destroy the privacy of others. They give privacy and fungibility with one hand (providing CoinJoin services) and take them back with the other (selling data and blacklisting undesirable inputs), making money as a centralized intermediary.