What seems prolific is the sort of "bad" Japanophile, commonly referred to as "weeaboo" or "Wapanese". Reita-Chan is a good (satirical?) example:
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These people follow three or four anime obsessively, speak as much Japanese as a year-old native toddler, and mistake very local characteristics for Japanese elements. Either that, or they prefer to address local elements as if they were Japanese elements.
Then, of course, you have the more serious Japanophiles who might be interested in the Shogun series of novels, books by Jake Adelstein or other sociopolitical observations on Japan. These people are interested in the country as it truly is, with all of its idiosyncrasies and less-than-glorious aspects.
Unfortunately, there's quite a bit of overlap between the two. Some Wapanese blossom into serious Japanophiles, others don't. The Internet, being what it is, simply caters to both. Outsiders focus on the weeaboo aspects because they're what're more readily identifiable.
I consider myself as a casual observer, for instance. I'd never set foot in Japan to save my life - as the cultural difference freaks me the Hell out - but as I enjoy reading about other cultures, this works just as well. I'm far from being an otaku, though, as a lot of what I've been shown in terms of Anime simply didn't do it for me. I don't understand teen fanservice as a market to begin with, and I tend to limit myself to the more "cerebral" productions in the genre, like Ghost in the Shell, Paprika, Perfect Blue and such.