If anything the M1 Mac reduces the case for cross-compilation since they're actually fast enough to build code on. Compare that to e.g. compiling hefty C++ proj

If anything the M1 Mac reduces the case for cross-compilation since they're actually fast enough to build code on. Compare that to e.g. compiling hefty C++ projects on the Raspberry Pi where cross compilation on a fast x86 box is ideal (but still far from trivial). For non-trivial projects you want CI anyway so it's a better ROI of your time to just to add an additional VM, Docker or native runner. And let's not forget you'll also want to run your automated tests in the native environment.