I had not heard about this, but honestly I could not care less. If people just ignored this shit rather than pandering to the trolls, maybe there'd be no incentive for them to keep doing it.
eBay has (or had?) a habit of spamming ads in Google searches that said things like "Looking for ${WHAT_YOU_SEARCHED_FOR}? Buy it new or used on eBay!", no matter what you'd searched for.
So of course people would search for all kinds of imaginary/dangerous/illegal/offensive/etc. things just to see if it would spawn any "hilarious" auto-generated eBay ads.