Will ZK effectively end all competing privacy-centric altcoins (purely from an anon-tech standpoint)?
I guess what I am trying to ask is this: Is ZK the holy-grail of anonymity? And will it leave all other currently available anon-tech (such as DRK, XMR, XC, etc) obsolete, inferior, & nonsensical to use?
It's like asking a question, will cars replace horses with carriage and make them obsolete, inferior, & nonsensical to use? The answer will depent on when and whom you are asking, the owner of the cart or machine. Only time will tell, ZK is providing top tier defence, that means there is nothing better to look for, absolute might (or something close).