Why: Currently, user interaction with tabs on mobile browsers is totally broken and super cumbersome. Dazzle is merging browsing history with tabs which is smart and leads to a super smooth user experience. Actually, there are no tabs anymore, just the browser history which pops ups every time you touch the address bar at the bottom. Simple but nice solution.
Moreover, it offers a bigger viewport than Safari does (no iOS navigation bar at the bottom und a black slick and super slim address bar).
Finally, I like the slightly rounded corners of the viewport. All small and subtle stuff but shows that the creator cares about a polished appearance.
But I am not sure about the landing page and this 'first principle' thing. People don't get it and it sounds super awkward. Really remake the landing page, make it slicker, put some screenshots there, remove the first principle blabla, find a punchy headline and remake all the copy.
You should definitely keep on working on this and not let yourself getting discouraged. The product and the minimalistic approach you chose is excellent, the Marekting/branding not so.