Sure. Unshipping things is always hard, and likely to break people. But there's still a difference between unshipping support for a standard and unshipping su

Sure. Unshipping things is always hard, and likely to break people. But there's still a difference between unshipping support for a standard and unshipping support for a non-standard technology that only you ever implemented. In the latter case, people should be a lot more wary of depending on the technology in the first place. While it's true that browser updates may break your app, it's also true that there are ways to write the app so as to minimize the risk of such breakage. Using Custom Elements V0 was _not_ a good way to avoid potential breakage...