Kaggle’s annual survey is here:
https://google.qualtrics.com/jfe/form/SV_8vuiBypoM1Xuixf
If the questions like: “Which language would you recommend for a beginner?”, and “The frameworks/tools you use” have enough responses as Julia and it’s packages , it might speed up the process of getting Julia on Kaggle.
Very bad survey: the last 20% seem to take 80% of the time.
Anyways, I finished it 
There is also this quite old discussion on Kaggle:
For those willing to try, there is already this work around to use it right now, which I was pointed to as well. I think to if enough people are using the workaround, that might help gain support.