We're talking about people who already ponied up $60. From that alone, you can't infer (a) that another $60 is a pittance to them, (b) that they own a MacBook or any computer at all, (c) that they are professional developers, or (d) that they are capable of using vim. If you think that any of those is a given, you're spending too much time on HN.
And how the concept of "charity" is relevant to paying customers of a product, I do not understand.