I know the fandom is dedicated heh.
Myself I harbor a grudge against EK because I view her as hateful toward sharing themes.
Haven't touched GGGB, yet.
And I can see how one could read EK that way just with ORS.
There isn't a lot of consensual sharing, and quite a few head scratchers with certain choices...
Like, Lena can kiss Holly and screw every other dude in the game, but if Ian kisses Holly, all hell breaks lose, and don't make the mistake of having sex with Holly if "dating" Lena, even if she's "cheating" or pursuing Holly...

Don't have much experience with that dev, just ORS.
And with only the one throuple option (various ways/paths to get it), a few threesomes, and a bit of talk about a MMF threesome with Lena, yeah, the "sharing" is barely there...