"How many characters do you like" is a whole 'nother topic. And "largely" copy pasted seems a bit of an exaggeration when it just seems to be a repeated scene between the two sisters.
You must be registered to see the links
At a rough glance, there's...29 recurring
named futa encounters in the game.
I stopped counting the females at double that. It's still not even close, no matter what criteria you use. Important characters, permanent characters, battlefuck, non-battlefuck - the ratio is between double and triple in favor of females.
This is getting into opinion territory, but I'll bite here as well.
The most energy? Easily female characters. Tobs has written, as mentioned, one futa. Of Savin's three companions, the one that gets the most attention by far is the female one. Wsan has written more for Brienne than any other character (though he has written three fairly in depth futa).
All the marriageable character characters so far? Female. All the ones planned? Mostly female, and two males.
Characters you can go on dates with? All female.
Characters you can have an actual kid with that's an actual NPC and not just a number? All female.
Characters with in-depth preg content at all, vastly bent towards female.
Really, there's little to no romantic content for futas in this game at all. Valencia is it, really. And if you really want to stretch the definition of romance...maybe Evelyn and Arona?
Heck, just glance at the changelogs. Run through them and note how often they actually include content for futa characters. Pretty sure entire months have gone by with nothing.
TL;DR I do not think that there's is any actual way to interpret futa as the predominant sex of the game.
And saying it should be "a rare minority fetish set of characters" seems to be personal bias. Again, by all available evidence, the fanbase of this game
loves futa.
The idea that the thing the fanbase has clearly indicated they are massively in favor of should be rare seems a bit misguided.
There are very few futa games on the market at all that aren't just straight up low-effort crap that's not worth anyone's time...so it seems a bit cruel to begrudge the factually small amount that this game does have.