Hypothetical example: i enjoy playing warhammer fantasy and MTG using homecast and printed cards, because i don't have to deal with miniature shortage and random bullshit to get cards that i want. Is that fine in your book, because it's playing a game in a way i find more enjoyable?
Another example: if i use wpe pro to alter cost of bank-dinosaur mount to 1 copper, because i enjoy playing the game in this way more that's also fine?
Bug exploit is an exploit anyways, it's your "duty" as a player to not exploit bugs (as you yourself agreed to do in EULA, if common sense and sportsmanship in a multiplayer game are just fart sounds to you). Using excuses like "oh, blizzard didn't do anything yet about it, so it must me fine" is simply dishonest, it's obviously a bug, and you are obviously exploiting it to get multiple 120s for whatever reason (doubt that to play them all, more likely running character-exclusive content for gains, or mustering an army of bots to do mechanar chest runs for profit)