I can say the actual n-word without meaning to enflame or diminish - it is very easy in fact: take a sentence where I would have used the literal n-word, and replace it with the actual n-word.
That said I think there are a few places where the use is acceptable, but it’s not common and those uses almost never get called out anyways (so it is generally understood).
Pedantic note: the 'context' in context free grammar has no relation to the kind of context you're talking about here. It's a very technical notion.
A language being non-context-free just means that the string language doesn't fall within a certain class. It in fact took quite a while to show conclusively that English was not context-free; it's far from obvious.
None of this has anything to do with 'context' in the sense we're talking about here.