I highly doubt the strange penis anatomy and the crayon eyes are the reason for its “low” upvote counts.
Don’t I know that… Still, there’s little one can do to please the audience that’s in one’s own control. One could chase trends, or cater for attention-starved niches, or to those with very specific tastes. If one chooses to do that, they don’t need outside voices to make that decision.
One could switch media—a lot of people filter 3d art outright for various reasons, so there may be a visibility thing in making rather reserved NSFW 3d art—but once again this is a choice where outside opinions lack helpfulness.
One could strive for artistic growth, which may not please the audience in the short term, but will pay dividends for the rest of one’s life in all forms of art, and even support any future changes in genre, topic, or medium. Also this is the only area where I feel I am at all qualified to offer my opinion.