As far as the design is concerned, I don't think there is any problem or abnormality. If we want to design an animation image with human image and biological characteristics, designers will be at a loss in the era of reform and opening up.
Many small factories and companies in China, especially some rural enterprises, have strong regional coverage and their products are all local. They use human and animal heads and then register their trademarks. China has a vast territory and rich resources, and there are too many trademarks that we haven't seen before. The image designed according to your so-called rules may be refused registration because it is too similar to a trademark we have never seen before, and then changed when we come back. The easiest way is not to change your avatar, but to have an eye and a hand. If you don't register, you are afraid of production.
In addition, not all living things have two eyes, such as spiders. Cartoon images are based on creatures, not just humans or mammals, so if you feel abnormal, it may be personal psychological factors that make you unable to accept such a design.
Psychologically speaking, people have path dependence. Make individuals have strong thinking inertia, behavior inertia and psychological inertia.
I think you can understand this analysis.