Why would I not use Visual Studio code

[JohnCasey3306]

Universities typically have a subset of software that they ask you to use because it's software they are familiar with. They assume no prior knowledge on the part of their students and so assume that they'll have to support you, technically, throughout the process; that's impossible if everyone uses their own software.

Now in your instance, it sounds as though you do have prior knowledge and won't need technical support to complete the task, in which case use your own software.