Yes…and what percentage of the playerbase has this that is affecting overall game play?
Not even world first guilds have rosters decked out in full avoidance.
The amount of people that even remotely get a 5% overall reduction is so minimal, that it’s able to be overlooked and left as it is: extra player power.
Crafted gear is able to go to 528. The game is tuned around people having gear at that level. If we add tertiaries to everything, and it’s commonplace now, the game will be tuned around that, and their entire bonus will be neglected. In fact, it’ll be like hit and expertise where the game is balanced around you having so much of it, and not having it will put you at a clear disadvantage.
That’s now how it operates now.
Leave them as RNG and be happy if you get one. Like WF/TF in BFA. Want more chances, play the game more