JQuery wasn’t a big failure of the past, it was a hugely important library that helped make robust interactive sites in the browser landscape of the time. That

JQuery wasn’t a big failure of the past, it was a hugely important library that helped make robust interactive sites in the browser landscape of the time. That landscape has changed so it has become less relevant, and coupled with modern webdevs having decided that it’s reasonable to just say “use chrome” just as they said “use IE” before it, means that such a library is no longer as necessary. I’ve seen a few people over the last few years saying that whatever framework is currently popular should be built into the browser, and in its era people were saying the same thing about jquery - and vigorously arguing for it.