To be honest and fair though, while I agree that Yohio is morally despicable in a lot of ways and the fact that I have personal relations with people affected by this (as do most in the fragment of what's left of a Swedish VK scene), I have to say that a major reason for the dislike is that western peoples shit generally get out a lot easier. There are plenty of Japanese bandmen who do equally awful things to fans and other women who happen to get in their way. We just don't really hear about it because we either chalk it up to Tanuki rumours or, most likely, no one cares to read up about it at all. Because looking up every entry level bandman who fucks up (without breaking any major laws) would just not be feasible.
Ironically though, I think he's representing the current (unfortunate) trends in the Japanese scene pretty well, tapping into both the pop and the more heavy sides of "neo-vk" with his various projects. The problem is that it's highly unoriginal and sounds like derivatives of a bunch of popular bands tossed together in a blender based on what he was able to dig up on his latest youtube escapades, bands that themselves aren't very exciting to begin with (this is personal opinion though, of course). I also always found him and his group of friends to have pretty shallow knowledge of VK during encounters so the fact that he apparently knew several 90s bands back in the day sometime surprises me, because I've always felt during conversations like they're the kind of guys who think Dir en grey's OBSCURE PV is the most cool and obscure shit around. (remember when Yohio was watching it in that documentary from SVT? lol.)
So while I agree that there are plenty of good reasons to not like Yohio, my point is that if this was another good for nothing Japanese indie VK guy, chances are we wouldn't be interested, but precisely because he's a foreigner and we have access to a larger amount of information we are able to more easily pass judgement on his behaviour. And perhaps that's for the better, really.