This is the old &quot;use the right tool for the job&quot; cop-out. The original post went deeper than that. I would summarize it like this: can modern complex, large-scale web apps be built with the tools we have today, be they Python, Ruby or Javascript?<p>Or do we need an entire new class of tools which have traditionally been used to build large scale systems in the past?<p>It&#x27;s a multi-faceted question of type systems, tooling, packaging, dependency resolution and others. And as web apps continue to evolve, my guess is that the current tools will be considered lacking.<p>It used to be that picking &quot;the right tool&quot; meant choosing between Ruby, Python, PHP, JS. In the future it might mean using (gulp) Java + WebAssembly or a combination of other unusual tools. This would be quite game-changing for most web developers. ;)