jQuery Is Better Than React
melissa mcewen

I think one other reason for the movement away from jQuery is that Vanilla JS now has many of the features of jQuery out the box. For example, .addClass from jQuery is now .classList.add and .ajax is now fetch(); couple that with polyfill.io (brilliant service) and you don’t even need jQuery for backwards compatibility.

Having said that, jQuery is a wonderfully made library and is still a viable option. And I agree that many people are way too quick to jump to React for trivial things.