It's a joke. There are dozens of cities with articles calling them "the next Silicon Valley". But everyone still moves to California or New York when they need to raise big rounds and hire lots of engineers.
Actually Cuba is slowly moving to a quasi-free market, at their own slow pace. Sure, there probably won't be any longterm gigs anytime soon (like a couple of decades at least), but its worth keeping an eye for their projects, for the adventure of it if nothing else.