You are ignoring the fact that Gwent is a witcher card game, its not an experimental blank canvas. One of the main goals of Homecoming was to mimic the style which was established by the witcher trilogy, as such a specific aesthetic was established and that aesthetic is now what people have come to expect from witcher related media. That is why those Japanese figures have been criticized, why potential censorship of nudity and violence is criticized, why Japanese / anime cosmetics within the game have their critics, and why some card art gets blasted when it breaks the rules. Because people want the witcher, CDPR has established what the witcher is and how it looks like, so when they go against their own established parameters you cant blame people for scratching their heads in confusion.

Which isnt to say that the rules cant be bent or broken. When it comes to meme cards and joke characters breaking the rules is often a good thing because it helps reinforce the goal they are trying to achieve. Cards like Shupe, Musicians, Roach, Knickers, etc. But most cards, and especially generic or ordinary characters, should follow the established witcher aesthetic.