This blurb from today’s NY Times (online by subscription only):

“Certainly it’s hit Ralph Lauren, and I feel it’s hit Tommy
to an extent. Kate Spade is pulling back a little and
Calvin has pulled back the CK’s on a lot of things.” – Kal Ruttenstein of Bloomingdale’s, on the decline in designer logos.

The “decline in designer logos” discussed in the article refers more to the decreased use of logos themselves as design elements on the goods, and less to a cultural shift caused by rich people reading Naomi Klein’s No Logo.