There are certainly some problems, but I don't think they're all on one side. I think that the fact that people who don't spend any effort understanding the problem or trying to improve things treat Wikipedians with such contempt is also part of the problem.
Figuring out how to write an encyclopedia isn't a particularly easy problem, and a lot of people have spent some effort trying to balance things like, on the one hand, wanting coverage of everything, and on the other hand, not wanting physics kooks spamming up Wikipedia with their fringe theories. Lots of people disagree on how to do it, but I think people should at least make some effort to understand things rather than seeing it through the narrow tunnel vision of "the thing I'm a fan of deserves special treatment and Wikipedians don't see that so they're idiots". As in open-source, it's to some extent a contrib-ocracy; if you don't help improve the encyclopedia at all, but only show up when some external fan community is aggrieved, that sort of "contribution" isn't appreciated any more than it would be at LKML (they get such influxes now and then too, e.g. from fans of a module that wasn't accepted for merging).
> who outside of a subset of wikipedians thinks deletionism is a good idea
I actually see the opposite criticism at least as often! Wikipedia's often attacked in academic literature, and some news stories, for being filled with "Star Wars and Pokemon cruft", and not paying enough attention to reliable sources or people with expertise in various fields. There are also periodic controversies about it including articles on borderline-notable people who object to their inclusion. Most forks, like Larry Sanger's "Citizendium", have been based on the Wikipedia-is-too-loose-with-its-standards criticism, rather than the opposite one. Not that I agree with it, but it does seem to be the most common criticism outside of fan communities.
Figuring out how to write an encyclopedia isn't a particularly easy problem, and a lot of people have spent some effort trying to balance things like, on the one hand, wanting coverage of everything, and on the other hand, not wanting physics kooks spamming up Wikipedia with their fringe theories. Lots of people disagree on how to do it, but I think people should at least make some effort to understand things rather than seeing it through the narrow tunnel vision of "the thing I'm a fan of deserves special treatment and Wikipedians don't see that so they're idiots". As in open-source, it's to some extent a contrib-ocracy; if you don't help improve the encyclopedia at all, but only show up when some external fan community is aggrieved, that sort of "contribution" isn't appreciated any more than it would be at LKML (they get such influxes now and then too, e.g. from fans of a module that wasn't accepted for merging).
> who outside of a subset of wikipedians thinks deletionism is a good idea
I actually see the opposite criticism at least as often! Wikipedia's often attacked in academic literature, and some news stories, for being filled with "Star Wars and Pokemon cruft", and not paying enough attention to reliable sources or people with expertise in various fields. There are also periodic controversies about it including articles on borderline-notable people who object to their inclusion. Most forks, like Larry Sanger's "Citizendium", have been based on the Wikipedia-is-too-loose-with-its-standards criticism, rather than the opposite one. Not that I agree with it, but it does seem to be the most common criticism outside of fan communities.