Lmao a poly relationship jeopardizes the fanbase huh.
"Cutting off the majority" huh.
Yes. As one of the most sought after romances options in the series is milo removing the option to only romance him is potentially a risk, a lot of people prefer a single person romance, not saying that the poly route should be erased, just give the reader the choice like belladonna and Gabriel's romance routes instead of removing the opportunity entirely :)
The author has said you can romance Milo and Malcolm individually, but they will still be in a relationship with eachother. I don't know if it's a path they just haven't gotten around to yet like the purely platonic path (I haven't tried it myself, I'm perfectly happy with another rare case of a genuine poly route), but unless they've changed their mind, the option was not removed. Unless you mean cutting Milo and Malcolm apart entirely so it's not even a v-poly; in that case I don't believe there's ever going to be any intention of that
Lmao, judging from the drop in fandom and the downvotes you're getting, the majority made itself clear.
The only way the author can recover the fanbase it once have is with the new characters, but considering how theyve handled everything else I doubt any of them will be solo either, not to mention the sheer lack of content those characters will have compared to the others from book one.