The SR exploit definatly caused a behavior which can only be described as system abusive and plain unskilled strategy use.
And it wasn’t even about winning N7Warrior. It was just about getting the most SR from a win and the least from a lose. The reason why you could really see it if a Mercy player did that with the winrate.
But anyway… I get what you mean, why they changed it. Ow players like Pew Pew and not think think so it had to go.
Yet this is really not a game issue. Overwatch was so successful because it was not just “be good at aiming or lose” and i think the decline of the playerbase is basically the aftermath of throwing that idea out.
If they would have sticked with the idea of smart gameplay wins over pure mechanical skill, the game would do much better as i see it.