I see the logic behind your point.
I disagree however.
In my humble opinion, if we want games to grow, we're gonna' need bigger control options.
This isn't new. Let us not forget that only in 1990, the biggest gaming system at the time, only had six buttons and a four-way D-pad. I of course refer to the SNES.
Just a few years prior, the biggest system of the 80's, the NES, had two buttons less. And a few years after 1990, a certain system called the PlayStation introduced us to the analog sticks we now rely on for just about every 21st century title on consoles.
Massive control requirements aren't going to be restricted to PC gaming for much longer. Consoles have slowly been increasing in their interface demands over the years.
Why do you think that trend is going to stop all of a sudden? Because that isn't how peripheral development works...
I give it three years and you'll all be using a keyboard daily on your games.
The future is only getting closer, and there is no escape.
Adapt or get left behind. Wanting development to stop is pretty damn selfish IMO.