That would depend entirely on to what standard you would consider someone to be 'unbiased', because everyone comes with some level of bias in their thoughts and actions.
The writing is solid. It is descriptive, engaging, erotic, and at base level is grammatically solid. The cast have desires, motivations, goals, and personalities; in other words they
are characters. You can quibble over the content, but if your complaint is content based rather than on the fundamentals, that's inherently a biased take. Is the writing perfect? No. I'm sure it could be improved, but it is by no stretch of the imagination 'bad' in any fundamental way.
The art is pretty fantastic. It's painterly presentation lends itself to the dark fantasy aesthetic very well. The proportions, perspective, and anatomy are all really solid. Their artists demonstrably know their craft, and have a strong grasp of the fundamentals. Again, is it perfect? No. But you really need to be up on your own game before you can start nit-picking their work; and not liking the content is not the same is critiquing it for quality of the work itself. So again, nobody can honestly look at the art and call it 'bad' in any fundamental sense.
The animation however is another subject, and most of it is very much lack-luster. It suffers from not nearly enough keyframes, resulting in a very rough and choppy presentation. Part of this is due in no small part to the fact that the art being used does not lend itself to being easily animated, and they just don't have either the time or the skill to make it work like it should. Again their art style is a major handicap here. Good animation is already hard, and their art only makes it harder.
Everyone has bias, and I don't expect people to entirely jettison their biases and become emotionless automatons. If I just wanted an uncritical take without any real feeling involved, I'd ask Chat-GPT to shit out some word salad. Being able to recognize bias, put it aside when needed, and otherwise engage with it when called for, is the hallmark of good critique. Much in the same way a good news reporter shouldn't just tell you the facts of a situation or story (e.g. the US implementing unprecedently high trade tariffs the world over), but should also be able to display their bias by giving commentary on why it is good or bad and for what reason (e.g. it has destroyed decades worth of soft power, is undermining US allies while bolstering hostile foreign powers, all in exchange for instigating a economic recession that benefits only the uber-wealthy who can weather the storm).