It appears to me it could become the low level language of choice for small embedded systems in contexts where Lua or MicroPython couldn't fit the bill performance-wise and one wants something higher level than C. Ditto for Nim and Crystal.
It lures people in with “use any allocator you want”! Which only appears as freedom of choice when reality it’s locking the user into the same paradigm of memory management that has given C a bad name to begin with.