The Martin Agency has been named agency of the year 2 years in a row. They’re pretty popular, at least for the moment. The biggest thing to remember is that ideas are the currency that creative people use to get promoted and recognition within the industry. So for a client to steal the idea and not give credit is pretty insulting.
That being said I worked at Martin for 11 years. They pitch a ton of ideas to clients all the time and gradually dump most of them. I can easily see the QR code being pitched fairly early by a team and it getting cut.