This file is only needed for Windows 7 which went 'out of service' back in 2016. It isn't needed for any later versions of Windows. I suggest therefore that you download it and copy it into the same directory as ptxprint.exe or else into a directory in your path. It sounds like a number of other programs may hit this problem in due course on Win7 (even the upgrader to Win10 needs it!).
As to whether we should ship with it. I think given the context, it is unnecessary for any actively supported OS which is what we aim to support. So, in your case, it is not unreasonable to ask you to add the missing dependencies that are specific to a legacy OS.