Interestingly the Microsoft page that CNET article links to still claims only 1GB is needed for the 32 bit desktop version of Windows 10. I suspect Microsoft backtracked and updated that page closer to the release date.
Regardless, how long ago did anyone actually have a PC with only 1GB of memory?
As others have pointed out, the base line specs for Windows have been stagnant for a very long time. I remember bitching to friends who worked at Microsoft back in 2005/2006 about how each new version of Windows was basically pushing the requirements to help Intel shift new processors (which they denied, obviously). I, for one, am glad to see that that is no longer the case.