As long as you can copy and paste Python code to Mojo and it is 1:1 compatible with all your existing libraries and is hundreds of times faster than Python, that is much better than wasting time rewriting it in another language that is 8x faster than Mojo (in its first release) with hand-optimizations from Julia language experts.

I expect Mojo's first release to be fast enough that it would get the Python folks using it over Julia and that the next Mojo release or future ones will get another 8x or 10x faster.

The same outcome happened with Bun 1.0 and already claimed the top spot in speed and compatibility in the node ecosystem in its first release and it isn't even done yet.

The least amount of effort to get something done much faster wins by default.