The only people who think that are programmers already or programmer-adjacent. Your mother is never going to be able to use a Gas Town-like workflow to make software for her own needs, nor is she even going to want to spend her weekends trying. These tools still require a baseline minimum of technical knowledge, and a real time investment, and also a real money investment the way some people are using them. Moreover, most real software has interoperability needs. A world where everyone makes their own Twitter or WhatsApp is a world where nobody can talk to anyone else.
There is a small subset of the population who is now enabled to make proof-of-concepts with less effort than before. This is no way diminishes the need for delivering performant, secure, interoperable software at scale to serve humanity's needs.