If you define marketing narrowly, then yeah, it is dead.
If you define marketing as understanding customers, translating those needs to people inside the company, segmentation, and then translating products and features into something that people will want to buy, I don't know hot it will ever be dead.
Case in point: the article points to Apple as an example. Yet, last time I checked, Phil Schiller was still the CMO at Apple (Sr VP of Marketing).
Don't believe everything you read!