In reply to Jovan.

As I understand it, with the advent of the Block Editor, jQuery is not required for Core WP anymore.

Though many themes and plugins still (heavily) depend on it. Phasing stuff out / removing stuff will likely not happen soon, as WP likes to keep backward compatibility above most other things.

So I’d expect that you can use modern WP without jQuery already, but WP will likely not remove it for the coming years.