Yes. Your reaction to hearing it for the first time is normal. Most people with any sense read it, then say, “huh? That doesn’t sound right. It can’t be that stupid. I must have missed a step. What did I miss?” So they read it again, and there’s still no missed step. it really is that stupid. It can take a while for that to sink in, though. I too spent quite a bit of time assuming I must have misunderstood something the first time I encountered this in college. I cornered my philosophy prof about it and told him I though I was missing something. He told me that’s what everybody thinks the first time they see the OA, but that it really is as inane as it looks.