> their asinine sign up waiting list kept me from pursuing it further
Yeah, this -- combined with the fact that their website told you nearly nothing about why their browser was worth signing up to something just to try it out someday -- is why I never used it. I don't personally know anyone who did.
It seemed dumb at the time -- I was actively looking for a better browser and certainly would have considered Arc, but they were determined to keep me from learning anything about it (let alone try it), so that never happened.