The original quote draws attention to the mistake of not giving enough attention to the hypothetical where something appears to be wrong/stupid, but upon further investigation turns out to be correct/interesting. However, it confuses the importance of the hypothetical with its probability, and endorses increasing its level of certainty. I pointed out this error in the formulation, but didn't restate the lesson of the quote (i.e. my point didn't include the lesson, only the flaw in its presentation, so naturally it "misses" the point of the lesson by not containing it).