Probably the other way around. When I first started using Rust it still had LWT and segmented stacks. I was excited that it seemed like I'd finally have a sort of "systems" Erlang. Over time the only consistent large nexus of Rust users using it "in anger" were the compiler team itself and the Servo team. Lots of those folks were, or had been, working on pretty significant C++ code bases, and over time their needs and perspectives seemed to (kind of necessarily) take hold.