>There's nothing wrong with criticizing the series or medium in which it resides
Sure there is, it's a waste of time and benifits nothing. There's nothing wrong with nailing your foot other than it's a complete waste of time and you could do better things. And the fact that if you do not enjoy putting nails into feet then you could just not, instead of nailing feet only to complain about it later. Put simply, there is little logic in doing voluntary things that you do not enjoy. Clearly, if you consider that most anime is poorly directed and incoherently written, you do not actually enjoy the medium.
Criticism for criticisms sake is one of the silliest thing I have ever heard of. As it was mentioned in MGS2, humans cannot adapt to the information age. That is, before the existence of the internet one would discuss things they enjoy with their friends, and you are their friend because you have things in common, and therefor when discussing things with a fellow you will inevitably have more positive than negatives in discussions due to similarities of personality. Sure, there may be things you disagree with when discussing a particular part, but those can be discussed and resolved in rather quick manner due to similarities between you and your friend. So when having a discussion in a normal situation, without the advent of the internet, most discussions are positive. The problem with discussions on the internet is you are pretty much guaranteed criticism, the criticisms can never end when you discuss things on the internet for there is practically no end to opinions. It is not a natural state for a mankind to be in. When discussing with friends you simply disagree and then move onto the more positive, because you are friends for the reason of being similar of taste.
The only way for the internet to become a natural habitat for discussions for mankind is if man inhibits his own natural instincts and restrain himself.
With all that said, it is beyond logic to do things, voluntarily, that you do not enjoy. For what purpose, if I dislike feminism, would I go to a feminist forum?