Sure all of those are escape hatches that work against any memory safety tech.

Point is, Fil-C goes further than any other memory safety tech in terms of what it guards

How does it compare to the equivalent code in Typescript, Go or C#? Those languages all have “safe” syscall wrappers too, for a subset of syscalls.

Those languages rely on a much larger pile of YOLO C/C++ code for their runtimes and standard libraries than Fil-C does.

So Fil-C is safer than those

Fully agreed. At some point you have to draw a line and say that the rest is the responsibility of the kernel and hardware and user, and I think Fil-C drew that line in the right place.