The update is controversial because it makes ad blockers less effective under the guise of protecting privacy and security, and Google just so happens to be the world's largest advertising company.Starting in January 2023 with Chrome version 112, Google "may run experiments to turn off support for Manifest V2 extensions in Canary, Dev, and Beta channels."Chrome's built-in solution forces ad blockers and privacy extensions to use the primitive solution of a raw list of blocked URLs rather than the dynamic filtering rules implemented by something like uBlock Origin.Under the new specifications, extensions like these—like some privacy-protective tracker blockers—will have greatly reduced capabilities."There's no way of knowing the end-user impact until these solutions are developed and Google kills the existing extension platform, but loudly rolling out user-hostile changes seems like one of the few things that could hurt Chrome's market share."