Yeah, it's highly suspicious that two people happened to have watched the same highest-grossing, Oscar-winning movie sometime in their past and now reference it when an obvious chance to shows up.

Because it's a commonly remembered when someone says something like what Altman said. The comments in question were posted within 33 seconds of each other, which isn't enough time for the later person to notice it was already posted. It's also pretty common for a bunch of people to parrot variations of "we investigated ourselves and found nothing wrong" when someone who investigated themselves found no wrongdoing.

Replying to your reply: I actually wish I had watched way fewer movies (and fewer times) as a kid. I envy you!