I mean, sure, but they have all the same problems as threads for most / application-level developers. They're indeed quite different when you get into calling

I mean, sure, but they have all the same problems as threads for most / application-level developers. They're indeed quite different when you get into calling out to C or other kinds of FFI, but relatively few developers need to do so directly. For everyone else, they come with very nearly exactly the same semantics as threads.