I think at organizations like that it could pan out well and they will probably have clarity about what they're trying to do with the role change. It's easy to imagine communication is better in those businesses, so people inside the org will know what it's about.
I think in other organizations there won't be that clarity, it will get muddled, and then it will be status quo with a new label on it and get poisoned. In those sort of companies, it will likely be rolled out as a way to show the company is hip or whatever and will just be a mess. Anyway, I wouldn't characterise my view as it's leadership matters. I think it's clarity/communication matters. Even now, people on twitter don't seem clear on what he's trying to achieve with it.
Anyway, it's an interesting idea that this is their way of shifting from one approach to another. It makes me wonder why would they have to dump a whole role to do it though. How does that solve anything? If it's about bringing in more marketing knowledge (e.g. positioning), just do... that? All just kind of interesting. Guess I'll wait for more info to come out about it.