Yes, Resident Evil: Extinction is probably the best film in the series, but I think I would have preferred it if they had started with that film.
But, I really don’t think Alice was the best character to start the film franchise with, and unfortunately, we got stuck with her for the entire series.
Even so, I think it would be better if this wasn’t Resident Evil and was just called something else instead.
Sure, we got Chris Redfield, Jill Valentine, and many others in the later films, but I think the Resident Evil movies would have stylistically felt more like Resident Evil if we had gotten one of the mainstays early on.