As a strategy gamer I'd say it's quite the opposite, simplicity is ruining the genre. C&C, SupCom, SimCity spin offs, CIV5, AoE etc etc. I would have thought more complex strategy games would have still had a place, even if a minority. Seems the current climate doesn't allow it. I'd love to see a modern Sim Life!
Add MMOs to this list. The dumbing down of MMOs over the last few years has been brutal and relentless.