Rust has complicated semantics surrounding borrowing of course but its syntax is pretty straightforward I find! What makes you think it is complicated?

I think memory safety is a weak argument for rust and only works against C/C++, as you mention. For me, the strongest arguments against GCed languages are static analysis goodies that other languages don't have. Like checked immutably by the compiler, the borrow checker which forces you into a certain architecture, fearless concurrency etc. All those lead to fearless refactoring, which is a very strong point for me.