And yeah, that would be sadly true if we start yet another browser project, when we already have Mozilla and KHTML... :/
It's hardly a new browser project.
a) It wouldn't be about developing a browser. Who gives a monkeys about browseui, favourites etc. We only care about the rendering engine, and then only because there's a buttload of proprietary code out there that relies on bizarre quicks and "features" of mshtml in order to operate.
b) it'd be based on either khtml or mozilla. not starting a new rendering engine.
c) we have little choice. Well, that's slightly melodramatic, obviously nobody has to work on it. But sooner or later somebody will find they need it. Probably lots of people.