Ultimately the kind which imports a library becomes react developers or django developers or other framework developers, while the kind who learns how to implem

Ultimately the kind which imports a library becomes react developers or django developers or other framework developers, while the kind who learns how to implement things on their own become generic software engineers. So you can see which kind a company hires based on their job ads, if it lists a lot of frameworks and libraries then they expect you to have spent most of your time importing and using libraries. While if the ad just lists domain specific knowledge and some generic coding bits they will mostly have people who likes doing things on their own.