I don't think he is completely correct.
The smartwatch may well be an excuse and I think there are mistakes being made in marketing, sales models and design, but I also think that tastes in buying habits are changing: Convenience is now king in all things. J. C. Biver reconises this.
Hayek refers to his company's boutiques as proof that buying habits haven't changed but boutiques are a sample that suffers from confirmation bias. Of course buying behaviours from boutiques haven't changed, and that's because boutiques are what they are. There is, howeer, now a world outside of boutiques and ADs and these types of premises are no longer so appealing to younger customers. I'd say that, on this point at least, Hayek is the one making the mistake.