They probably realized that they'd just said a dumb thing, or at least a thing that the OP felt was dumb, and were covering.Those players don't have a generation difference making problems with their understanding D&D, I think they're just amazingly dense.
I've worked both customer service and criminal law. Believe me, people do this to crazy extremes. My old boss was one of the worst- he'd blurt out incredible misstatements, and the only way to get him to back down on them was to shrug them off, leave for a few minutes, and come back. Then he'd tell you that he'd reconsidered, and didn't think that anymore. If you disagreed with him right away, he'd entrench, and soon you'd be arguing with him, "No, appeals are only for issues of law." Dude's been an attorney for decades. He knows that. He just misspoke and can't back down in front of a subordinate.
Meanwhile, I need to go think about puppies until those memories fade and my blood pressure falls.