mario

iperf3-darwin is installed in /usr/bin (installed by XCode) and you don't need Homebrew version.  It's man page says: "The iperf3-darwin is a tool for performing network throughput measurements based on the ESnet iperf3 project that has been modified to use functionalities specific to Darwin.

Headphone jack is located on the side on the desktop computer???? Who wants speaker cable dangling from the side all the time going to external powered speakers, instead of neatly tucked behind the screen and out of sight?

Typical consumers should not and will not care nor understand what you are even writing about here. They will just buy a Mac and use it.

People who are concerned have vested interests in things continuing the same way.

Things are not that simple if you are a software engineer. Transition from PPC to Intel wasn't as smooth as some like to believe. PPC was big endian and Intel is little endian.  If you had C/C++ or ObjC code that did low level bit twiddling and assumed byte order, you could not just recompile the code for new CPU arch. You had to re-write the some code in architecture portable way. People use and compile code from decades ago (I know I do), and having to re-comple everything again to get my tooling right is non-trivial task (that is if I can even find source repos for some of the things I use).

There is also issue of virtualization. These days pretty much all software deployed to production is virtualized, even things like Node.js (JavaScript source code), and if you cannot install say Docker on your machine and test software as it will run in production (production is usually Linux on x86_64), then Mac becomes unviable software development option.