gamerprinter
Mapper/Publisher
As a science teacher (reformed) I don't mind it so much. Because there's an un-spoken point here: Why are they using a lizard-form at all? They can us any body form imaginable, but they specifically chose a basically reptilian form. They did it to use a trope. Having made that choice, they set expectations in the audience that it fits the trope - if it looks lizard-like, we expect it to *be* lizard like, and these days, science tells us what lizards are like. When it fails to be lizard-like, it should be for a good reason.
Because it isn't a snake woman, any more than it is a woman snake. It is a chimerical thing - a creature composed of body parts of several different creatures. Our expectation is set that it will have qualities of each of those creatures.
Nitpick: is it begging the question? Traditionally, "Begging the question," does not mean, "begs for the question to be asked." It means, "assumes the conclusion."
Arguably a dragon is also a chimeric creature, being a combination of snake, lion or other big cat predator, and a bird of prey (the 3 monsters of nature that primitive man most feared) - at least by some of the earliest descriptions of dragons. Because a dragon is so iconic in fantasy, however, it has settled into specific tropes that essentially abandon their chimeric origins. Of course none of those chimeric aspects of a dragon include a human, as other chimeric creatures, like minotaurs and harpies. I see no justification of dragon boobs from human myth origins point of view. Still the concept of dragon is so far removed from its origins, that an argument basing on origins has little meaning.