How do you know that your product is garbage? If your customers can’t wait to stop using it - it is.
Now look at the Forbidden Reach. A lot of the rares are up. As soon as the FOMO (fear of missing out) stimulus is gone, the rewards are outdated, most people do not care about that content anymore. It means the gameplay is garbage.
Look at the accounts of people farming for specific mounts, pets or items in the old raids etc. Usually they go like “I’ve been doing it weekly on my 15 alts for 3 years. Just got the thing. Hope to never see this content ever again”. It also means that the game design is garbage.
People were playing Division and its Survival mode not as much because of the loot, but because it was fun. Star Wars: The Old Republic, while being an unimaginative MMO, had great quests worth playing the game. Dark Souls fans do not play the game for loot or grind. They do it because overcoming the difficulty is rewarding in itself.
Dragonriding in the new expansion is fun by itself. The world design - visual, sound and even lore - is good, as it has been through other expansions. But the gameplay of the non-stop killing rares and grinding stuff with low drop chances is garbage. As other gameplay elements.
Now. Everyone makes mistakes. They are fine. It matters how people react to making mistakes, not the mistakes themselves.
What does Blizzard do? It continues with Loamm Niffen.
It looks like someone at the headquarters is sitting and thinking: “How can we hold people in the game, make them waste tons of their time?” Which is a fine strategy, even if short-term, if your goal is to make money. But such abusive relationships do not work long-term. And they lead to loss of trust.
Blizzard, you could do better. Your game was more interesting. If you do not know how to detect garbage products yourself - hire someone. Or let me know. Happy to help.