Yep. When it can’t be confirmed, that’s the growing response. And in the process sends you down an endless and senseless rabbit hole to nowhere. When you ask, you’re told you haven’t looked hard enough.
Yeah. There's several posters that are notorious for the "it's up to you to substantiate my claim" laziness.
Part trolling, part willful disinformation (IMHO), but it adds up to (thankfully) them being identified as using that practice and being challenged by more and more FReepers.