Hi, maybe some of them do "ask nicely", but you have to admit, some of them are kinda... Hostile...
For example, "NTR? I am out." Or something along those lines. But as what mention before, there are usually more "extreme" kind of people, be it NTR Haters or NTR Lovers.
But if the "Hater" support the game, instead of "complaining/ranting" on a random forum post, I do believe it will be more effective if they give their feedbacks on the Patreon, where the Developers can be how big a support that person is.
And well, there are a few games, not mentioning names, where the forum gets so toxic about NTR that the game get scrapped or the NTR part gets a rough/rush ending.
And those amounts that you stated, there is no way that you know if 100% of the earnings come from NTR Haters.
Look over this particular forum, there will be mentions of, yeah, people stating that there is NTR and they are out. And I am pretty sure that are not paying Patreon.
And again, NTR games... Will have discussion like these, instead of talking about the progress of the game. And as stated many times, I do hope the Developers will get to create the game they have in mind. Unless a NTR Hater patreon throws in thousands of dollars in a single month and demand for a change.