Some numbers people miss out on about Golden State, while being blinded by 3 pointers.
Golden State was 17th in the NBA in 3 point attempts last year. Starting with their first title, that ranking has been 4, 18, 5, and 17. Of course, they've led the league in 3 pt % 3 of 4 of those years, but in addition to that, they've been 2, 1, 1, 1 in 2 pt percentage (and that's despite not having any kind of traditional post game), and have been #1 in assists, by fairly large margins (absurdly large in 16-17), all 4 of those years.
I guess you can make the argument that having the shooting is what leads to all of that, but I don't think the shooting is anywhere near as dominant without the passing.