I'm guessing the point wasn't to express mere disinterest, but active resentment of the opposing viewpoint: "Not only have I no desire to converse with you, which may be taken as a hesitation to engage with your views, but I believe such a conversation to be utterly worthless because I despise your entire world view" with a dash of "You're a bigot and I want nothing to do with your kind."
It's a good question if you're unfamiliar with this quote.
Once you get to a certain depth of vocabulary, and basic level of skill in writing, it's easy to write a lot of text.
You can sort of "talk around" your central point, adding reams and reams of text, sketching out your point in a crude outline, eventually arriving at a complete picture or just stupefying your audience into submission.
This kind of communication is evidence of "thinking out loud," where you know the vibe of what you're trying to say, but figure out your logic at the same time as you're saying/writing it.
Especially in writing, this would be considered a first draft. If you take the time to think about what you're trying to say then you can often refine/reduce your message to a more respectful length (a shorter one).
I guess you get some thoughtfulness and economy of words kind of for free them. Reminds me of how (I think it was him) Edgar Allan Poe would write with slow-to-dry ink, so he would have to take his time when writing.