> Which is a different story that just asserting fearless concurrency no matter what, also misleading.

Frankly, you're being a bit disingenious. Nobody claimed that Rust can or will solve all conceivable concurrency problems. "Fearless concurrency" is generally understood to mean "...within a single program", not "...across different processes/machines/networks". By the time you understand what interprocess shared memory is, you're well able to correctly interpret Rust's "fearless concurrency" slogan.