No, I wouldn't say it is. Vue is probably something like the 12th proclaimed jQuery-killer such as every new social network is a Facebook-killer. It's a very inaccurate assessment of what's going on imho.
Most people will tell you that you shouldn't be using jQuery because vanilla JavaScript will do for most usecases (and use a frontend framework like Vue for the the rest).
If you ask me personally I don't think jQuery going anywhere soon, it's just too efficient and easy in it's workflow.