It never really went away for me. I still reach for it in every web app. Over time, I've stopped using some parts of it that used to be timesavers... e.g. shifting away from $.ajax calls to fetch, but it's a good base for rolling your own responsive frameworks if that's what you want to do. And it's what I want to do, because I dislike the paradigms for react and vue, and have no interest in relying on those projects.

could not disagree more. That statement alone makes me completely lose any consideration for this entire project.