Perhaps. Depends on how deeply you invest your time and life. There are those that will swear by Dark Souls games, while I just can't bother to put the time into it. Much like LoL and other games where you need thousands of hours to get good and play optimally, vs playing for recreation.
It doesn't take much for something to truly be complex enough to enjoy. I'd refer to CRobots as an example, where you are merely controlling a single tank to take out the other tank(
s), however the complexity is only as much as you choose it to be, while it will still result in very very complex behavior or difficult to master.
Between Rogue-like games, I've probably put 80 hours into all of them together. Most into
ADOM and Dungeons of Dredmore, and still have yet to go anywhere near deep enough to finish the game, with or without mods. ToME probably has a good 10 hours from me.