Earlier quoted context omitted.
Rust hasn't grown in scope very much since its release, but in places where it has grown, particularly async and unpin, I find that there features interact very badly with lifetimes and borrowing. I am often forced to ditch borrowing across async method calls and to put everything in Arcs, even when the lifetime is well-defined and it could be easily used if it had been scoped threads instead of futures. I fear that…
Technically though, isn’t memory safety not necessary in some cases? For example, single player video games. You can exploit your own machine if you want, but that’s not an issue. I like rust, but if I ran into async issues and annoying stuff, I could see a world where I grab a non-memory safe language to make games easily.
This certainty comes at a cost, either by negotiating with the Rust compiler or by putting up with a GC. But depending on your calculus, that cost might be worth paying.