Yes, it's an entirely new stack, that's what the higher level commenter was talking about. I realize we've discussed this same article before but I do believe it is the way forward, for web apps at least, because the current HTML and CSS stack is really not as good as it could be, and as well, we are seeing a lot of new renderers in various languages coming out, so they'd need a new unified API. There is no reason to think that extensions would break once that new API is finished, because at the end of the day, it's all just Skia rendering the content, whether it translates from HTML or WASM.