I don’t remember the specifics but it was to reduce the risk of breaking third-party software coded with some janky way of determining Windows versions.
Probably lazy detection for windows 95/98… The 9 might get parsed for those much older OSes…I know many apps were compatible with both 95, and 98… So they might just do a lazy check that 9 exists and call that “compatible”. When a windows 10 named 9 might not necessarily be.
However, knowing how much old shit is still compatible in Windows, I’m not sure this would have been that much of an issue.
Probably lazy detection for windows 95/98… The 9 might get parsed for those much older OSes…I know many apps were compatible with both 95, and 98… So they might just do a lazy check that 9 exists and call that “compatible”. When a windows 10 named 9 might not necessarily be.
However, knowing how much old shit is still compatible in Windows, I’m not sure this would have been that much of an issue.
That’s more or less what I remember of their rationale as well. Apparently it was common enough that they legit considered it a potential problem.