The recent "Chibi Rush" update added a way to replace the classic character portraits with their Chibi editions. Chibi is a Japanese style of cartooning in which the characters are drawn to be very small and cute, with exaggerated heads and eyes.
Personally, I am agnostic when it comes to anime, manga, and other types of Asian art. I am not a fan of it, but I don't hate it, either. However, I resonate with those who say that it doesn't fit in this game. I can look past the Chibi portraits, but there are people who can't. One player has already claimed to have tossed the game because of the recent Chibi update. Another one says that he is tired of the anime stuff that everyone has on their profiles and social media. Others say that realistic portraits would have been better and wonder who asked for this to be added.
I understand their reaction. This is a game about a zombie apocalypse that presents itself as realistic, down-to-earth, and serious. In the modern era, where cartoonish game art is getting traction, this is one of the few games that stays loyal to the overall realistic design. There are bound to be people who play it for immersion, and those new Chibi portraits will be breaking that immersion in addition to being in conflict with the serious, apocalyptic atmosphere of the game. "Just don't use the Chibi portraits then" is not the answer, as it doesn't address the problem where players have to look at those portraits.
On the other hand, there are fans of Japanese art who happen to like those portraits. They find them cute and are glad to use the Chibi portraits for their characters.
There is a solution to meet the needs of both groups. Add a menu option to hide Chibi portraits right under the "Displaying non-story characters" switch: Settings > Game > "Hide Chibi portraits for characters." Don't want to see Chibi portraits? Flip the switch, and you won't. Those who want to see them will see them.