I also think there's a lot of people still using jQuery simply because they're scared of SPAs, the learning curve involved and how they basically change the role of a front end dev to more of a fullstack dev.
I once considered myself a front end dev but these days I'm using SPAs, running NodeJS, pulling & managing data from REST APIs, sending / retrieving stuff from a database, managing NoSQL database, using serverless functions, working with websockets and GraphQL etc..
Am I still considered a front end developer? Because I know front end developers who still carve a living out of HTML / CSS / jQuery alone. They'd be toast when it comes to present day job interviews for example for front end positions. It just seems like we need to split 'front end developer' in to about 3 or 4 levels to better represent people's skillset / what's expected of them.