I don't see what's childish in using my right not to attend an event with an explanation based on my personal taste.

Being childish would be "if you do this I will not come" which is absolutely not my point. I have no power on anything related to SMK events and even if I had I would not used it this way which would be much more than childish, to be honest.
There are many debates where I'm much more open than anyone else, and I think you're forgetting a bit quickly how the very old & "roots" SMK championships evolved to an international competition with all the visibility that came with. Please.
Belgian system is something I was skeptical about at first, but I wanted to give it a try, and I'm happy to see that's better than I expected (even if I miss the previous one, still for personal reasons based on pure taste and don't feel the need to develop there). Losers bracket is something which just doesn't go with my conception of a final phase, so I don't want to take part into a competition using it, that's all.
Once again, it's funny how people say "if you don't like something, get the fuck out" but criticize your behaviour and speech when you say "I'm getting the fuck out because I don't like something".

EDIT: oh and I don't give a fuck about how EVO works. I'm not into e-sports and I thought that was really clear in everyone's mind after the CDM 2016 "e-sports experience".