It would make sense, at least from what I'm aware of. Neuroplasticity is high when you're younger and decreases with age. Therefore, one who is younger would be better able to form new neurological pathways associated with different control schemes, and as they aged, they'd likely be less able to adapt to unfamiliar control schemes.

Interesting cause I've been using keyboards for about 35 years, mice since they were forced upon me when DOS went to Windows sometime in the late 1980s or early 1990s and I am still a crappy typist/mousist.

I've only been using controllers for about five years but I was able to learn to use one of those quite well in just a couple of months and am far more comfortable with a controller than a keyboard or mouse. I enjoy controllers so much more than K/M that I got a controller for work and often use it instead of a mouse.

It wasn't my intention to do that. I was just making observations about the feasibility of using text entry in a game. We've had 30 years in which it could have been developed from the clumsy example we see in games like Zork.

Google does a very good job of parsing misspelled and ungrammatical search entries, and it does it fast enough that one could envision an internet-connected game using an online server like Google for high-level text parsing. If I'm not mistaken, this is the way Siri and the other voice-parsing-and-response systems work. (Voice parsing is significantly harder to do than text parsing.)

As I mentioned above, I don't use game controllers, but I have used (and own several) flight-simulator controller devices.