I think it is way too simplistic to divide people into two either/or camps of those who are hardcore gamers who like lots of options and complexity versus those who are casual gamers who don't like too many options or much complexity. I am very much a casual gamer, someone who does not have much time at all (sadly) to play video games and who wants to blow through combat quickly without having to put in too much effort. But at the same time I am also very much someone who loves having TONS of options (options are ALWAYS good), options in gameplay, options in character creation and development, options in party composition, options in dialogue and quest resolution, options in settings and difficulty, options everywhere. I also love my RPGs to have complex systems. So exactly where would I fall in this very binary discussion?
It is very much possible to be both a nerd gamer (I am okay with that word as I very proudly consider myself to be the king of nerds, that being a nerd is a very good thing, and society would be way better off if more people were nerds) and a casual gamer at the same time.
