Here is what he reacted to, can you explain how it was not sarcastic and demeaning in everyway?
"Yes, Yesterday's tractor website.
Ever heard of it?"
The first sentence would have been all needed, but when you added, "Ever heard of it?", YOU started the riff.
He who attacks first should never be surprised or whine about getting attacked in return.
Let's lay it down and let it rest as suggested above.