Sadly the support role is infested with a whole lot of power tripping losers. I’ve always hated that about the role despite it being my main. So many support players will refuse to heal their team for the smallest “infractions”, as if the momentary feeling of power over somebody else is more important to them than winning the match.
On the other hand, I’ve also had people throw, or at least threaten to throw, just beause “I wasn’t healing them enough” for their liking, despite me being more than busy healing my front line. Those are more rare, but I’ve had some egregious moment, this one most of all: https://reddit.com/r/Overwatch/s/z4GNMoo6ec