The article makes broad, sweeping generalizations, but it was enjoyable and engaging to read, so cheers to the author for that. He's right, too, generally speaking: lots of work can and will be done remotely from various locations across the globe. Of course, there will always be natural divides (that's what makes us human). Someone who can't speak the same language as the rest of the team just isn't going to get hired, no matter how well they can code.

Government regulations also play a huge role in how "globalized" a job can be. If you're working at a defense contractor, for example, you sure as heck aren't going to be replaced by a foreign national. In many cases, the office culture at those companies won't change hardly at all, due to data governance restrictions.