The reason it's not the best analogy is because keyboard layout is not biologically programmed like handedness. If anything, Dvorak being more ergonomic makes it more biologically friendly.

I wouldn’t actively try to teach them anything, but let them learn on their own.

Not to dole out parenting advice, but not influencing your kid concerning a fundamental skill like typing is 1) a mistake, & 2) unavoidable once they start asking questions.