Yeah, I know. It's just that it is one of those old chestnuts about Japan that may have been true once, but is either changing or already changed years ago....yet foreigners (especially those who have never been here) keep on passing along to each other. It gets tiresome after a while.
The main point, though, is NOBODY in Japan is idjit enough to see a great honking huge Swede and mistake him for a yakuza. And having a tattoo is not going to adversely affect his stay in Japan in any MEANINGFUL way.