It will not remap his muscle memory.

If it's a key you use frequently, and no longer have the other option, muscle memory isn't that hard to retrain.

You're wrong. Muscle memory is very hard to retrain. To buy laptop with esc button is much more easy. It will be just not MacBook Pro, but it's their problems.

You're wrong? Muscle memory is not that hard to retrain. I had to do it when I first started using a Mac, on which most of the non-qwerty keys (and some of the qwerty ones too) are in a different location to the standard IBM layout.

Nope - at the moment, my CAPS lock does nothing. But I'm not going to adjust my habit of where to find the ESC key just so I can have some pointless colourful lights.

Instead you could adjust your habit of where to find the ESC key for the sake of ergonomics (Caps Lock is much bigger and closer), like I did years ago, and take the colorful lights as a bonus.

What about the fact that I frequently jump between machines, many of which aren't mine? It's the same as people telling me to learn the Dvorak layout. Any possible productivity gains are lost in forever remembering what keyboard I'm on.