He's not a regular participant, Magnus is almost an institution of his own.
Either way, it's literally his job to follow the FIDE rules (which is unusual but true), and he's the best in the world at his job.
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> "It's entirely possible to read 4.10.1.1, conclude that blue jeans are fine, and then skim over 4.10.1.3."
In all fairness I originally did the same, so I hear ya. But I'm not a pro at this.
He is also very much no in agreement with FIDE (a tradition for chess champions - see Fischer, Kasparov). And to be honest FIDE is on FIFA level when it comes to being dodgy as an organisation so it’s hardly surprising.