If you have a blog/Tumblr/Facebook/Twitter, any kind of social media, where you write your opinions, or you leave comments in other people’s blogs/social media, you are “an arbiter of things on the internet” because you are using your own subjectivity to express an opinion on those topics that interest you. That some of us do so more passionately on certain topics than others, or are more vehement about some subjects, doesn’t mean that others, like the person who attacked MizJenkins is not doing the same thing (being an “arbiter”).
I suspect that what some cannot tolerate is the “popularity factor” more so than the arbiter aspect.
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