Let's see, going by the index, which technologies are younger than a year (the logic being "would your statement have made sense a year ago" because I obviously

Let's see, going by the index, which technologies are younger than a year (the logic being "would your statement have made sense a year ago" because I obviously can't prove if a technology will still be relevant a year from now): Internet/web: no Web browsers: no DNS: no HTTP: no Web Hosting: no UI Design: no HTML: no CSS: no SEO: no JavaScript: no DOM, BOM, JQuery: no Web Fonts: no Accessibility: no ... and so on. But maybe you meant just Javascript libraries, which seem to make up just a small part of the content, but ok... Let's use "Module/Package Loading Tools" as a sample, because this thing is really to big to go through everything: Browserify: Started in 2012. So... nope Rollup: Started in 2015. No (but close!) SystemJS: 2013. Nope, sorry Webpack: 2013. Nope And let's arbitrarily add the behemoth: React: 2013. Nope It appears there was an awful lot of new frameworks in 2013 and that let to the impression of framework churn. To perpetuate that narrative four years later seems to be more groupthink than reality.