This exchange reminds me of a time many years ago where I was reading a computer magazine and they talked about “Windows 9x” and I thought they were referring to some version of Windows that I had never heard of.
Only a couple of years later did I understand that it was simply a shorthand for talking about Windows 95 and Windows 98.
Edit: And looking now at Wikipedia apparently it also covers Windows Me. (The Millennium Edition that came between Windows 98 and Windows XP.) https://en.wikipedia.org/wiki/Windows_9x
Also the reason that Microsoft skipped from Windows 8 to Windows 10. Too much risk of apps testing the first 8 characters of the Windows version against "Windows 9" and concluding they were running on 95/98 rather than 9.
Only a couple of years later did I understand that it was simply a shorthand for talking about Windows 95 and Windows 98.
Edit: And looking now at Wikipedia apparently it also covers Windows Me. (The Millennium Edition that came between Windows 98 and Windows XP.) https://en.wikipedia.org/wiki/Windows_9x