Thanks for that blog link! I have been asking this question for a while and you are the first to provide an actual useful answer.

Can I pass arguments to these components in other languages? Still unclear

It looks to limit, or create specific points, of where the reuse can happen. Like it is still impossible to use a helper function from one runtime in another. So we still need to maintain utilities in multiple languages

Either way, it looks like a lot more complexity for anyone who goes down this path