I don’t think that injection molding is going away. Especially not for things that you want a large quantity of. The rise of desktop injection molding machines shifts the industry a bit. In this case, I see 3D printing being used to create the piece that the molds will be made from. A move away from some of the large industrial molding machines - in part, but they can still do larger pieces than the desktop machines.
So, yeah, there will be a shift in the industry, but certainly not the death of the injection molding industry.