NTR is one of the primary themes of the game, so a lack of it is going to draw complaints sooner or later. Especially when that lack of it is for the principal character that is meant to be involved in said NTR.> We've reached the point in development where people complain about lack of NTR.
lol.
Personally my issue isn't with a lack of NTR, it's with a lack of compelling Alexia content. Rowan has the advantage of being the primary protagonist, and the design of the game means that minimum 2/3rds of all content is centered around him in one way or another. Alexia, by the nature of her design and the manner in which she is implemented into the game, plays a more passive role and that unfortunately means she suffers more from the fickle whims of the patreon base than Rowan does since his character has positive momentum with or without the support from the patreon and Alexia does not.