I doubt this, but would be curious to see a source.
> You could then just say that you disagree and state your case, without rudely asking why they posted it.
I didn't find it rude at all, and your reply was far less productive than my IMO neutral question. You took offense on behalf of someone else and inserted yourself when it was unnecessary and entirely reliant on your interpretation and perception. Now we're discussing your perceived slight instead of anything of substance.
The alpha male stoic carricutures, maybe. Real world stoics have not been above those.
>you too should be able to have picked up that I replied because I disagreed with that implication.
You could then just say that you disagree and state your case, without rudely asking why they posted it.