So then I went to Japan and haven't received or heard of anyone receiving similar vitriol aside from the OP.
A foreign coworker (same race and nationality as me) endlessly complains about racism, discrimination, and being stared at here. I've experienced none of it.
I'm not here to dismiss the author's claims, but most of the weeaboo to Japan hater crowd I've found is people who lived very cushy lives with close family bonds, and when they put that aside in a somewhat "cold" culture, they take offense to everything. As a cold, unsocial person myself, Japan is incredibly welcoming in that I feel like I can finally be left alone without being isolated. I hated having people randomly start conversations with me in America. I disliked the "not my job" attitude of Americans. I very strongly disliked how confrontational and easily angered Americans were (especially how people complained about restaurant services and the minorest of things, while here, it's practically unseen).
And then there's the people complaining about being a "foreigner forever." Honestly, how many asians in America get asked,"so, where are you from?" whenever they meet someone? I've seen it countless times. It's just a matter of being on the other end of it now.
And then he leads into "I can't believe they don't restrict speech and porn the way we do in my culture." In all honesty, fuck off. This is no better than someone being disgusted by western media showing bare female hair. The standards are subjective.