I have seen this library in the recent courses I've taken. Playing around with vanilla JS I really found it useful!
However, I've seen lots and lots of posts dismissing the use of Jquery, probably in favour of the use of a fancy new framework as React or VUE.
But I found these opinions very drastic and non-newbie friendly. Starting with a framework is medium-advanced stuff that maybe not everybody is ready for.
What do you think?