*sigh* Windows does NOT encourage users to run as admin. It throws up a box saying "this software wants to do something to your computer". And on loads and loads of websites, you see advice that tells you to
1) Switch off the access control
2) Change the permissions on <something in program files> so you can write to it
3) There is still software that is released that more-or-less expects people to grant write access to places they shouldn't have to (Bethesda/Steam - Skyrim immediately comes to mind, but there are others).
With a mindset like that even with the large developers, let alone the help sites, what do you expect. If people advised you to always run as root in linux, they'd be howled down. But apparently it's Microsoft's fault that doing the same thing on windows is considered par for the course.
There are plenty of criticisms that microsoft deserves, but encouraging people to run as admin all the time is not one.