Having an alternative to Python would benefit the ML ecosystem, which is too much of a monoculture right now. Julia has some really interesting statistics, probabilistic programming and physics-informed ML packages.
Emulating Python's ML ecosystem is not going to be a viable strategy. The investment into the Python-based standard is just too large.
What I could see happening though is that the continuous evolution of the ML ecosystem will further abstract components of the software stack down to an MLIR/LLVM abstraction level at which point something like Julia could also use this componentry. Sort of a continuum of components, where the "frontend" language and associated programming style is the remaining choice for the user to make.
Same author as the more mature Enzyme.jl, which is AD done at the LLVM level.
Julia's flexibility makes it easy to write a simple AD system, but perhaps we're learning that it's the wrong level to write the program transformations needed for really efficient AD. Perhaps the same is true of "run this on a GPU, or 10" transformations.