Probably. And I partially can’t blame them. I mean, they had enough faith in their playbase to not expect this kind of trolling in a PVE mode… until we proved them otherwise. Which’s kinda sad. It shouldn’t be Blizzard fixing the issues we as the players create. But that’s how the online community functions, unfortunately. 
I tried that before and it’s a 50/50 chance to get a decent team comp to actually make it til the end. And all the more frustrating if you end up with a duo that picks healers and never heals you once… on absolute purpose. I literally had to force my way into that Moira ult to get heals lmao. They still let me and my friend die on most occasions though and when they were going to revive us, they teabagged, went out of the circle and then back in, just to teabag again. That’s the kind of thing I experience in Retribution hard mode. Not fun. x_x’
Well, I was thinking the same thing, until the following happened : It was me and a friend, a random Moira and a Tracer. Moira was solo-healing in medium, which shouldn’t be much of a deal. She mainly DPS’d though and rarely healed, if at all. The Tracer was basically just minding her own business and idling about. We somehow made it past the exploding door and down to the docks; the point where our Moira completely stopped to heal. She was rushing ahead while me and my friend were fighting off the enemies. Tracer suddenly stopped moving and I thought ‘Oh ok, she’s probably afk’ing or something’ …
If only that would’ve been the case cos that’s when the game would’ve kicked her. But unfortunately, she started to kill herself by jumping into the water, by throwing her pulse bomb onto the floor etc. and we had to revive her over and over again while she casually said ‘Hello’ and ‘Thank you’ before killing herself off again. And while we did that, our Moira just continued onward without us, lmao. She triggered all the enemies, until we had THREE ASSASSINS on us.
Tracer kept dying on purpose, we had to revive her, she scraped the enemy just to not get kicked for inactivity, and let them kill her again. Rinse and repeat. We were literally unable to leave the docks. Eventually, our Moira returned for a short amount of time, but not to heal us. She brought that heavy assault guy along with her and soon me and my friend were dying and that was the point where we left the game.
I really didn’t want to. I wanted to finish this just to not give them the satisfaction of successfully trolling us and throwing the game just to piss us off. There’s no point in trying any further if you walk at the same spot without making progress. Plus I think they wouldn’t have tried to revive us anyway. It was a lost cause from the beginning.
So yeah, it’s possible to lose on medium when your team drags you down. If they die, you lose, despite all your efforts.