Why? The Ruby ecosystem is great, as good as ever. What do you think it's missing?
Ruby ecosystem is great, but it's not Python great.
Ruby ≈ Rails
Python >> Django
The talk isn't available online yet, but I'm excited to see what he has to say.
Also a reminder that all the heavy lifting in the AI ecosystem is done by C++ libraries, and Ruby has a great FFI for interfacing with C++. Also most app makers are just interfacing with web APIs anyway. Either way, you're covered.