So if we're just going to randomly use the word objective, I'll say you're "objectively" juvenile for exclusively focusing on plot. While sometimes the trappings of an expansion can be borderline absurd -- hello, Warlords of Draenor -- the stories told within can be immensely compelling. Mists of Pandaria actually had really excellent story, even if Pandas themselves are a ridiculous conceit. Warlords of Draenor's leveling campaign had some very sharp, engaging storytelling through contained zone stories. Jaina's arc in BfA is outright some of the best writing Blizzard has ever done, though the narrative as a whole for BfA was clumsy at best.
Shadowlands isn't really that absurd -- but even if it was, having a singular focus on plot over anything else is immature as a reader.