I feel part of it is that like 95% of harem games have to have unavoidable lesbian scenes. Also think of it like this if it was a guy instead of another girl could you still call it a harem. And then we also have people who dont care about relationships outside of the mc and would prefer to focus on the mc. So harem has become so diluted that some of the so called harem games should actually just have the swinging tag.
From what I've grew up with, those would be called Reversed-Harem if it was a guy instead of another girl. Unless you mean by MC still being a guy, then no, those would definitely be considered cheating or sharing. I can accept sharing between women but that doesn't really change the fact that women have no dicks to break men's heart and fully turn this into NTR. Just because there are lesbians in it doesn't mean these lesbians are going to steal each other away from the MC. This just means you have extra stuff that you can enjoy or skip.
But like I said, this is a harem game. Just weird as shit to be this dramatic about lesbians when we're clearly in it for the women.
And not to mention, I'm trying to give these babes a story and a reason for why they are the way they are. 30+ women. Would be boring as all hell if they all just do the same thing and not have anything added to it aside from just BJ, Vag sex, and Anal sex.
It may just be me, but I came with the mindset that I can just skip through the stuff I don't want to read. And it's not like I made these lesbian sex scenes to be 30+ minutes long.