My take on the Park family and their blog is that they are riding a wave, they know the rules, they are deliberately breaking them here and there in order to keep their blog interesting and their tailoring business popular.
They have hit upon a formula for manipulating social media to their advantage. It involves breaking some of the rules of menswear style. This gives them a "cutting edge" which is pretty damn cool. Good luck to them. I've given them my business, and although I'm not a big fan of this chalkstripe odd jacket, it won't stop me giving them more business in the future.