Edit: This is the most simultaneously upvoted and downvoted comment I have had on Lemmy. It appears that so far that more than half of voters either missed the “blunder” chess joke or they got the joke and audibly groaned. Understandable either way.
It's a bigger blunder for FIDE...they get headlines now that they kicked possibly the current most famous player in chess over a dress code violation that was not in the least distracting to other players.
He didn't show up in a T-shirt and jeans, he wore a blazer and a collared shirt.
A player broke the rules, which have been consistently applied for a long time, and refused to change after his first warning. Do you expect FIDE to make an exception just because he's the top contender?
Magnus knows that's not how the rules work. And they didn't suddenly whack him with a disqualification, he withdrew himself after being told to change. In his own words "fine, then I'm out. Like, fuck you"
Sometimes a simple mistake leads to an act of disobedience that shines a light on the foolishness of the rule in question. This is one of those times. A dress code like this is also a way of gatekeeping players that may not have the means to meet the dress code.
I'm not suggesting they need to scrap the level of decorum entirely, but allowing for modern interpretations of business attire is reasonable.
Also, he offered to correct the faux pas the next day of the tournament, and they refused. The article mentioned they also forced someone to leave to change their shoes - which was also ridiculous. Magnus just has enough clout to stand up to this. I wouldn't be surprised if they amended the rule.