>>935727642 (OP)It absolutely is, or rather, i would argue it is neither morally correct or incorrect in most philosophies. It is neither to be encouraged nor discouraged, simply allowed. The same goes for depictions of underage or seemingly underage girls based on real life people.
The only objection i have for picrel is that i don't remember Temmie having fucking G-cups but hey, artistic freedom so not my place to really say i guess