Anyone suggesting something over the older tech should be able to explain why. And alas, as you write a lot of times, this explanation phase is simply skipped and only the impulsive shaming remains.

However, that doesn't mean the new libraries/tools/technologies are just created because "oh it's been a year and we're still using knockoutjs/react/angular/webpack/yarn!", but because a slight paradigm shift happened - at least for some people - and they feel that backbone is not the ideal tool for their job. (Maybe they felt backbone is too barebones, and went for angular, then felt that too heavy, and tried React and settled for Inferno.js.)