I don't want to touch Python, and that's the problem. So it's just a wish.
But even if i love Python, the point is still: Make stronger ML support for Ruby.
Maybe you should try Julia? That might still be too much like Python.
https://julialang.org/
There are a few tensorflow bindings for Ruby. There's torch.rb. There's numo, kinda like numpy. SciRuby lists a bunch of AI-related/numeric gems.
What I'm trying to say is there's no reason to expect Python parity because there's Python and no reason to divert the effort but ML is not quite non-existent in Ruby. Start using it and be the change you want to see in the world.