Can't speak for other shippers, but for me it wasn't a problem of where we got or what lies ahead, but how we got there.
Maya always felt like a puppy in the middle of a busy, high speed highway. This fragility is what drove me to her in the first place, and to see her figure things out so quickly and seemingly effortless felt really odd. I assume Josy shippers didn't like to see their determined, strong willed LI make a 180º after a few lines of dialogue either.
You make some good points about the possibilities ahead, but suppose next episode Quinn stopped provoking people w/o much explanation. This wouldn't be, objectively and in itself, something bad, but a huge part of what made you care for this character in the first place would've been unceremoniously tossed aside and even if there is leeway for a satisfying conclusion and/or a return of your Angel to her former glory, for the moment, you'd be understandably disappointed, to say the least.
Right now I don't hate Maya or Josy, nor have DPC ruined the game for me. I don't expect this game - or anything/anyone for that matter - to be flawless, but, yeah, I got a bit of a bitter taste in my mouth, which I'm cautiously optimistic will go away when next episode comes out in 5-55 months.
...and if this is not the case, the other option is hoping in that car w/ Jade, so I'll be alright.