I see that makes sense. I feel it's also a little misleading from the original post. An exceptionally specific binary from 1993 works but the implication here is that the compatibility is more than this.
Author here. I've been running Windows since 3.0 and I copy my old tool folders with me whenever I change machines or upgrade the OS. This GZIP.EXE is the oldest EXE I have in my \ntbin tool folder that still works. The folder has 579 EXE files.
I think that is the point being made. This exe is cherry picked as the oldest working exe, it isn't like every 30 year old exe in that folder still works.
