That sounds admirable. But it doesn't sound like a fast browser.
That's because the article isn't about a browser - it's a tech stack for running ai.
Well it does say that compute is a current bottleneck, but I doubt that'll stay that way forever. There's a ton of resources going into making AI run locally, quickly. It's already gotten loads better just last year.
Maybe, but I would argue that some of these features are genuinely useful and important. Take translation, for example. It's not great to have to send off a page that potentially contains identifying content to Google, but it is the easiest way to handle the matter. Firefox uses local AI to perform a decent translation relatively quickly, and I'd like them to work on improving that capability.