I am not a fan of the term "toxic masculinity" because in the way it is invoked it usually means "all masculinity" (I don't subscribe to that model.) But, I believe that the idea that all men are irredeemable sexual beasts does come from a distorted masculinity that makes naturalistic excuses for sex crimes ("males can't control themselves".) I believe this is a factor in the fear of any man being around any child. Another factor is that pedophile are OK to hate, and where hate is left unchecked it grows and becomes increasingly irrational.