It's never the tool, the problem lies on the people.
Anyone can agree that something like rio has a function and it's a useful tool to have, but when that tool is used for other purposes like asking for certain score below +5 or whatever, the problem lies in how people are trying to get advantage of that system to get carried.
Because let's face it, anyone doing 1 afflix/+6 mythics above 350ilvl and looking for 370+ilvl people with great rio scores are just using the tool to cover their own inhability, they're just in a position were they get to do that because they take the "headache" of building a group and grinded world quests for the best ilvl you can get at the lowest level of gameplay, but they're still "exploiting" that tool.