Exactly. It’s not the existence of gating. Gating is not inherently a bad system. But, any system can be abused and overused. Which Blizzard has done in the past couple expansions. They’ve abused timegating as well as RNG. Neither are inherently bad, when used in moderation.
The problem is, Blizzard hasn’t used them in moderation. They’ve used them to keep players busy and subscribed. This however doesn’t mean they’re happy, and eventually you’ll have to pay the price for that excessive tedium.