It's not about the "horror of being gay", but implying something that is not true - Batman and Robin was "a wish dream of two homosexuals living together" and Wonder Woman's strength and independence made her a lesbian.
This was not the intention of the comic creators, but Wertham's mistaken interpretation.
Right. You're more worried about the fact that Werty got it wrong, had a mistaken interpretation, implied something that wasn't true... than the idea that what he was LYING about should not be the kind of thing that should be bothered about to begin with...
The problem is not that this stupid ****, Wertham, was "mistaken" (LYING). The problem is that he thought it was a good LIE to tell in the way of express condemnation.