We must be playing a different game.
My group has been playing it for a few months and we haven't found the rules too complicated.
They are new so you have to learn them of course but the nice thing about the rules are there are multiple layers so if you need to dig deeper there are mechanics for most situations but they are optional so you can keep it light and still have fun.
I don't find it more "breakable" than any other game mechanic I've used.