> They want to replace API to provide better performance. The replacement API is incompatible with what it is replacing. The supposed gain in performance is no

> They want to replace API to provide better performance. The replacement API is incompatible with what it is replacing. The supposed gain in performance is not without loss in ability to block ads. > ad blocking extensions won't disappear. May be some will, and new extensions emerge. Some kinds of ad-blocking is simply impossible in the new API, without replacement or workaround. No extension can implement those methods.