The "harem demographic" as you put it, likes a lot of women for one guy (or the reverse). At no point in time does that exclude them playing with each other - they are not mutually exclusive.
If you actually read his posts, he explicitly defines the terms harem and poly.
stating that a harem where the girls fuck each other is poly, and a harem where they only fuck the MC is harem.
Hence what you are doing now is a bad faith argument where you pretend to not understand him / that he made a different argument than he did.
Personally, I don't agree with his definitions. But I am not going to pretend he didn't say them.
I view myself as a harem enjoyer, yet he would define me as a poly enjoyer instead since I am ok with lesbians.
regardless, a sizeable minority, probably around 1/3rd or so, of harem fans do not like lesbians in their harems.
so it is a perfectly legit question to ask. as he stated, he cannot read minds.
What a foolish question.
There is hardly a harem game made these day that doesn't have lesbian shit. (So in essence they are Poly's instead of Harems but there is no tag to properly denote that at this time)
A great many of us are really disgusted with Lesbian being shoe-horned into harems so we want to know if it is optional.
Some developers have realized that they are losing a large demographic by forcing the lesbian fetish so they make it optional.
I am not a mind reader so I ask the developer so that we can know.
If you had done your research on the harem demographic then you would know this.
I hope that answers your question.
Personally, I can't
recall any instances of the harem girls fucking each other.
The focus is on mind controlling women / men (kobe) / transwomen (billie) into your harem.
Me not recalling any is odd, since there is a lesbian tag...