Yeah but the point still stands that you can still run new applications on Windows 10 in Boot Camp an old Mac. There's a good chance that if you're using a "left behind" Mac, that you can't even update your apps because they stopped supporting your version of MacOS, even though it's working perfectly fine.

Also, Windows 10 in 2021 is far from being exactly like Windows 10 in 2015. There have been a lot of changes, Microsoft just doesn't increment the major number any more.

> Windows 10 was released in 2015. Apple releases a new major macOS update every year. Not really surprised that you can run 6 year old software + minor updates on an 6-10 year old machine but can't run a major software revision from the past couple years.

If you're saying that Windows 10 from 2021 is Windows 10 from 2015 with "minor updates", you haven't been paying attention to Windows updates :-)

Windows 10 updates are probably bigger than MacOS updates.

Windows 10 consistently gets updates just like Mac OS gets updates.

This is like saying Mac OS X is 10 year old software.