Is it better to use jQuery?
Why you should not use jQuery?
What is replacing jQuery?
Is jQuery ui dead?
Is it worth learning jQuery in 2020?
You made some very good points about loading time, and jQuery is definitely not worth it. There is a lot of sites and even older CMSs that use it or depend on it for frontend stuff.
Basically, yes, if you know JS and whatever framework the company you’re applying to uses, you can get a job, but if it’s your first job they might expect to give you a decent amount of hands-on training for the first 3-6 months or so.
Is HTML still used 2020?