Blizzard has literally only between 10-30 minutes (if that) of unique story content per major patch, including travel time. The vast, vast majority of this game is just repetitive grinds and story-free filler in both hubs and repeatable world quests.
Blizzard would be hard-pressed to have any less story in this game, so claims that there is “too much storytelling” are laughable. This is particularly noticeable when comparing the game to the other narrative-focused MMORPGs on the market.