I found this on reddit:
https://www.reddit.com/r/eurovision/comments/8f4u91/what_happened_with_wiwibloggss_youtube_video_of
Scroll down for comments which describe the contents of that video.
Saw the video for the first time. I would have said that maybe he is a little childish, but he is only 20. A few comments like about Hungary are tolerable. BUT the way he reacted about the Macedonian drummer? It has nothing to do with being politically correct, but ESC is also about respect and he didn't show it a few times. As a character and person, I don't like him at all, but maybe within time he will grow. Let's hope.