Just as a keyboard has so very little influence on how people type/program/game
I'm not sure what is meant by "how people type", but different keyboards definitely make the typing experience different for me. Even if there is little difference in average wpm or accuracy, the pleasure I get from using one keyboard versus another is an important factor in the overall experience. But I have found that my wpm and accuracy do change depending on the switch/keycap combination, and there are very good biomechanical reasons for this. So I would have to disagree quite strongly that a keyboard as very little influence on "how I type".
Well, you're wrong..
The measurements and perspective of your claim is only relevant to NON-objective evaluations of any keyboard..
For example.. the newest samsung phone is faster, way faster, but the majority of humans just use these to browse for and chat up females on facebook..
What has all the technological improvements of the newest phone really done..
The issue here is Threshold.. Once the design and speed reaches a certain level, the bottle neck is USAGE, the human user.
You can not meaningfully improve your life with a mechanically improved keyboard.
YOU CAN JUDGE the keyboard as being better, and it would be TRUE, but that distinction has no hold on what you can accomplish in USAGE. Whatever you can DO with the keyboard is not bound by the keyboard's quality, above the $5 membrane dome boards.
Your experience, the feel, the sound, the mechanical tolerance.. all woefully insignificant relative to the time you've consumed evaluating these inconsequential properties...