I guess it just can cut out critical readings of things as just not understanding a fandom or not being part of a group. If pieces of art or entertainment are good I think they should stand under their own weight and should also be able to be critiqued individually.
Also there’s the aspect of toxic fandom meaning people feel like they have an outsized claim to ownership over the product and it’s themes even though they had no part to play in it’s creation beyond a small financial contribution.