How is it these days for other developers actually banking on certain tools to be present / working. What I mean is that apple isn’t shipping rsync etc to help

How is it these days for other developers actually banking on certain tools to be present / working. What I mean is that apple isn’t shipping rsync etc to help us developers but because the system needs it. It was already mentioned that this issue also exists for the other cli tools because they ship the BSD not the Gnu versions. Which brings me to POSIX which was introduced back then to tackle just that. Make sure that a set of tools has defined options / behavior etc. it seems to me that we lapsed here because more and more systems ship very custom setups which are not compatible. Or see the Linux and the issue with binary compatibility and the state of flatpack vs Snap vs others. I fear it becomes harder and harder to create cross platform solutions by using the system provided packages. Writing a shell script is already a challenge.