If you’re interested in doctoral studies, then you’ll most likely end up programming yourself more than using packages. For that Julia is certainly an excellent and highly productive language. For masters level studies focused on applied work, using packages is perhaps the way to go, and it may be that other languages still have an advantage, depending on what sort of work you’re interested in doing.
I have been using Julia for teaching and research for quite a while now, and the examples I present to the students are all in Julia (https://github.com/mcreel/Econometrics). Just today I had a good time programming a new example.