for a chess arbiter she doesn't appear to be very logical. this has nothing to do with "dress code". it's the message on her cloths that's the problem, not the cloths without the message. what if another arbiter had the russian flag and Z on their cloths? would that pass? it's common sense for the arbiter to be politically neutral. the players can be from any country.
She's quite logical. She is doing this for attention to her political cause, and it is working. She clearly cares more about the cause than she cares about chess, which is a rational choice given her personal moral values.
