So you are a supporter ???
Why should that matter in the first place? He just gives his opinion, whether it is a good one or not and dev has no obligation to listen.
Personally if I were a supporter, which I am for other games and have been for a number of other games in past (with among them a game that does contain futa, cheating by the wife, lesbian sex and even beastiality, since I do care way less about those in a game that is not about getting with that LI if it contains other dick/pussy or even real NTR, I always have to laugh about Non-NTR fans being vanilla, enough of them likely play other games without NTR that have quite hard fetishes that go beyond what you might wish to play. Everyone has his own likes and dislikes in the end and fact you do not like abusive assholes like Hunter ahve the action, does not mean you might not be kinky as hell in other aspects.) I would also have said do no what ifs. You see the one group asking to add it to main game and other go NoNoNo and if there is full penetrating sex with Brenna in the what if it broke the rules already since full sex with her is not in game yet with MC as of chapter 8, I did not play the What if so that may be a wrong assumption from me based upon remarks made. As expected, one of the reasons I did suggest another own separate thread from main game for the what ifs to minimize this.
Still that is not the main reason why I would have advised against it personally, even if the latest what if was just taking three days to produce that does not mean any what if will and even with one per month and 12 what if's a year that is 36 days a year without even the time dev puts into the voting and that is more as a month or 8-10% of the development time a year not available for main game and if NTR will win out 2 out of three times you can see some of the concern of the Non NTR side and why they do expect it to have an impact on development over time and move production of the dev overall more to the NTR side if take game and what ifs together as his total production. Right or wrong.
That said, well it is and always should be the devs decision in the end and his reasons where even just him having fun to make those What if overrides anyone else's opinion including mine, whether a paying supporter or not and he decided he wants to make them with the rules he made, so that is fair enough and as it should be. Considering the NTR in this game, well it is done as non-intrusive as possible in a game of this type, which is not the same as non existent and if would fully remove it the game as is would make no sense and has been this way from the start and well communicated by dev.
So if it is too much for you, a player should move on, even if I get that for someone like me that does not care for other dick in his games, fact so much extra time will be put into what if's that will have mainly scenarios you are not interested in will be no extra motivation to support, then again for many of those the basic setup of the game already has that effect I suppose and adding what ifs will not really change that.