You may have seen the picture, purporting to have source from a Microsoft developer explaining why Windows had to be versioned 10. The punchline is that so many programmers rely on the version to begin with "Windows 9" if they are running on 95 or 98, that Windows 10 was the only logical choice:
if(version.StartsWith("Windows 9"))
{ /* 95 and 98 */
} else {