The implication is that scalability problems in software will get easier and easier over time, and far fewer developers will be needed to maintain these systems

The implication is that scalability problems in software will get easier and easier over time, and far fewer developers will be needed to maintain these systems. Which is already largely true today with the advent of serverless. Most maintenance work can center around application logic rather than scaling physical machines/maintaining versioning. It's clear that many modern applications would take an order of magnitude more people to run even just 20 years ago. That trend will only continue