jQuery remains as useful as ever and the constant sniping here is a dead giveaway of a faddish mindset of not just making one's own choice but trying to force it on others.
Fortunately for those who do not have hours and weeks of time navigating NPM dependency wildlands, jQuery represents a quick and efficient escape. If Vue or React offer better efficiency or simpler use, users will migrate swiftly but given the current state of affairs that seems unlikely, so they can coexist serving different use cases.
The idea that React or Vue can or should replace jQuery is more wishful than real given 90% of jQuery use cases are for websites and ajax calls that would not benefit from the massive overhead of a shadow dom and NPM workflow.