Same here, tbh I haven't thought about jquery in a while and kinda came in here to see if it's dead or not. Yeah frameworks have largely eliminated the "need" for jquery libraries for most projects. It's weird to think about, didn't take too long to happen.
Every use-case I can think about is already well supported by vanilla css/js without libraries or frameworks. (not including really out-there use-cases like game engines or image editors)
jQuery Effects are usually easier to work with than CSS alternatives, single predictable line with events vs multiple lines that you can't hook thing into easily. Note that I'm not defending jQuery nowadays I even void it and always prefer vanilla, but there are things on that library that are objectify easier to do.
Use CSS animations everywhere you can, but if you need to be able to hook into an animation (to dynamically change the speed, cancel something, sync animations together, etc...) you should be using the Animation API.