You're making my observations into what they are not. It's not an axiological debate and I'm not looking into making people feeling bad for liking Julian, Marshal or Marina. I'm trying to look into what drives those very real, yet subjective patterns here.
It is an interesting pattern. However I feel like the term "sheep syndrome" should not be used in the case of preferential trends. Calling people "sheep" or just claiming that they fell into the "sheep syndrome" in reference to their opinions on which AC villagers are cuter than others can easily be read as an invalidation of their opinions. This term that I am referencing is mentioned in the title of the thread and in the body.
Of course there are patterns. And they are interesting. But just because the patterns are subjective, and perhaps possibly swayed by Nintendo and popular opinion does not mean that they are not valid. They are just as valid as somebody preferring a villager which might not be on that list of "popularity". Absolutely no less. To dismiss them as "sheep syndrome" is to invalidate them. This term makes it sound like people who are "falling for" the trend of enjoying a more well liked villager over another is "under the influence" of persuasion and is merely mindlessly following a trend. It equates them to being "malleable to influence" instead of just genuinely enjoying that character. For example, to go back to Julian -- it completely dismisses the possibility that that person could actually, maybe, just really enjoy the color blue, and makeup, and horses, and mythology, and so their enjoyment of Julian is just as genuine as another player's enjoyment of Carmen or Annabelle.
The use of this term is what I am arguing against. Not the idea of there being a trend, or the idea of said trend being swayed by a certain community member or used for marketing advantages by Nintendo, or whatever else. If you are not arguing against what I said above then I think that the term "sheep syndrome" should be replaced with something that does not implicate these things.
And my argument was more targeted toward John Wick's language of "not being one of the sheep", just for reference. But I did want to expand on what I mean.