I'm failing to follow the logic here. The initial point is that "The potential impact of the lone software engineer is soaring". However, the author then takes that to mean that engineers will be less valuable in the future? This analogy seems apt to me, and I think it makes the logical leap more obvious: Fifty years ago, if you wanted to design a new model of car, you had to get plywood and clay, and work hundreds o…
If something is easy enough, anybody can do it, and do it nearly as well and as fast as the best. For example, nobody can flip burgers 10x faster than average. Maybe 2x, but not 10x.
If something is difficult, then many people won't be able to do it at all. Most of the rest may only be able to do it very slowly and with great difficulty. The very best will make it look easy, even though it's not.
When something becomes 10 times easier, that doesn't mean the best become 10 times better or faster at it. They may become a little faster, but the real gains are at the low end: The average and worst performers become significantly better. Further, many people who just can't do the thing become able to accomplish it.