Why is Python, not Julia, still used for most state-of-the-art AI research?

Your comment and my response seems off-topic (still interesting, and maybe relevant in general about collaboration), regarding AI, but I really like to know if, with me just seeing Hyperbolic Deep Learning idea/thread today.

I’m aware of you and your packages, and I must admit, they’re above my paygrade. I understand physics at a level I’m ok with, but suppose I need to look into e.g. Clifford (Grassmann, Lie?) algebra, if I really want to understand the physics I want to know more about (e.g. spinnors, twistors and Geometric Unity).