Could you link to a source for this in Mojo's documentation? This would be a logical interpretation, but it would mean Mojo is planning to adopt a much worse implementation of async than Rust and the post is claiming that Mojo is both faster and easier than Rust.
I'm not familiar with Mojo, so my understanding above was based on their blog post that you linked, and assumptions based on context. Checking their website, I find a sentence equating "identity" with "having an address" though:
> So far, we've talked about values that live in memory, which means they have an identity (an address) that can be passed around among functions (passed "by reference").
If their self referential structs require indirection, I agree that they're weaker then what's available in Rust. Hopefully they provide more details at some point. The "No pin requirement" section in particular focused on Mojo's async ergonomics, not Mojo's async perfs.
