A bit of perspective on those who think progression is slow.
D has had 5 3somes with 4 different girls in the space of a week, which indicates there is obviously something influencing in why there is a reluctance for the dev team to consummate the sharing path with another male.
If it is a division between MrDots vision and the writing team MrDots should stick with his original vision for the game and get writers who will follow his direction
D and F have had sex literally dozens of times in Chapter 3, if anything I think there is too much sex. It often is just there solely for a sex scene, not for any real purpose as far as story goes.
I don't think the part about reluctance about sharing with guys is true, Graham and Ryan have both had "semi-4somes" with D and F already. Both of their routes are tied to Olivia and Margo, the girls act as a catalyst. I think either in the next update or the rework in November we will have a real swap 4-some scene, both of them (Olivia and D/F in bed) hinted at it in this update. I think Martin will happen after the competition is done.
I think the main reason people complain is they started playing specifically for the sharing scenes. We never had this drama before Ch3 was released, at least not that I remember. And obviously, with any game that involves that stuff, people will complain about it existing.
Another issue is, really, a lot of the Ch3 stuff should've happened in Ch2. Graham/Olivia and Martin (and all the other characters for the most part) have been in the game since Ch1. I think the game being banned on Patron (which caused Melody to be made) slowed the development of this a lot.