MacOS compiles Objective-C code and not C/C++ so you won't even be able to compile the source on MacOS.
Brute-forcing software is generally not written for MacOS because (i) Macs are expensive, (ii) Apple makes it really difficult to run MacOS VMs on PCs, and (iii) Ever since NVIDIA drivers stopped being made for Macs, there is a lack of interest for coding this type of software on this platform, as OpenCL is generally less efficient than NVIDIA's CUDA (which only NVIDIA cards support).
It's a shame, because it's absolutely good hardware but its wasted on a trash (from a compatibility point of view) OS.
I cannot agree with you (at least partially). OS is not far from a typical linux and very often any technical question could be answered from Linux point of view (Linux related answer).
The bigger problem I see (and unfortunately it is his case) is M1 processor. I case of x86 architecture, most of the code could be used without any bigger change, but as they recently made a switch to M1, I suspect he will have problems with running soft which was not written for that. For example any asm methods would be wrong.