It's not completely wrong. It's just personal preference. But, with that in mind, if you translate the text as designed, then it would be correct in the Resource Manager. So, technically, what you're doing is wrong, because it makes the language used in other add-ons wrong.
My honest advice would be to change it in your language pack to Quote / Reply as it is by default. That would arguably be more correct than having "Quote" buttons in various add-ons that actually are "Reply".