Alright, but who cares? Just use your old tool until it's beyond your expertise to maintain it or you want something else, then move on.
The feature treadmill makes sense if you're trying to sell a piece of software; but for the most part, a tool that was good enough for building blogs eight years ago is still good enough now.
User expectations, economics and the market all change in that time.
In the blog, the author mentions a need for using a "premium plan" for publishing his WP blog to protect it from being taken down by large spikes in traffic. That premium plan changed the economics of his blog, and the plan gets more expensive with time making his content less profitable.
The feature treadmill makes sense if you're trying to sell a piece of software; but for the most part, a tool that was good enough for building blogs eight years ago is still good enough now.