The analogy isn't that a qwerty typist can't understand a dvorak typist, but that when our society uses a certain standard, using something else that's only marginally better might be more trouble than it's worth. Would you want your kid to be unable to use the keyboards at school, or the library, or what comes stock on laptops, or (directly addressing OP) the workplace? Sure, many jobs require computer use, but unless it's an office, they're likely shared computers.
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And ergonomics.
The analogy isn't that a qwerty typist can't understand a dvorak typist, but that when our society uses a certain standard, using something else that's only marginally better might be more trouble than it's worth. Would you want your kid to be unable to use the keyboards at school, or the library, or what comes stock on laptops, or (directly addressing OP) the workplace? Sure, many jobs require computer use, but unless it's an office, they're likely shared computers.
Relevant xkcd: https://xkcd.com/927/