It's entirely possible to read 4.10.1.1, conclude that blue jeans are fine, and then skim over 4.10.1.3.
However the Carlsens read it, after reading it, years will have passed. Carlsen didn't dress like he did after a studious read of the rules. He just put on some nice clothes that were no different from what he usually wears at tournaments.
Except he forgot a belt. A proper organiser would have offered to lend him one.