Well, there is a simple way to prove it,
just download and install say 20 apps, of various sorts,
use all of them for a couple of days,
then use windows to un-install them... and continue using your computer
as you normal would...
Windows, does not watch the applications, of what software gets
installed, into which folders... and Windows, does not watch the
applications of what they take out, AND/OR leave behind.
Hmm, there was a application on Macintosh, that would encode a new
application, with a tag header of every part of the software that got
installed, so, you would launch the app first, the launch the the new
application that you wanted to install... and your done..
un-install was easy... too
just launch the first application, it pick from the list, and click
un-install ( all ) would be un-install, not even ONE trace left behind.
I wish I could say the same for Windows, But I can't..
Even, Microsoft offered One-Care on line, for fix registry problems...
As you know the registry does have a size limit.
Rick