Perhaps it's to make things (slightly) easier for people used to ISO layout keyboards? You could set both touching keys to be enter, and not have to relearn muscle memory - kind of, because you'd still have a weirdly long lower-enter compared to what you were used to.
Why? If you disagree with giving to charity, does that invalidate the rest of the article? Or are you suggesting that it was financially irresponsible to give to charity?
If the second, I think that this is wrong. She had a 6 month emergency fund - the (presumably) relatively little she gave to charity is unlikely to extend that runway very much. I think (some of) the point of the article is that true poverty is living a life in which your _needs_ are greater than your means. A little extra runway isn't going to help you in the long run there. Once you're in this position, often through no fault of your own, you become stuck in a cycle of poverty.
Rhetoric about poverty that implies that the poor are financially irresponsible I think is very damaging. No amount of fiscal responsibility could have shielded her from not being able to earn once she became sick, and having her costs drastically increased due to having a disabled child. I don't think it should be possible to find yourself in a situation where you cannot provide for your families needs (ie, food, rent etc) and we should be working towards creating a society where this is the case, rather than labelling poor people as financially irresponsible.