I pointed it out because many people use Windows XP, OS X, Android, or iOS. All those OSes (as well as UNIX clones and variants) don’t come with the font pre-installed.
But he/she said usually, not always. And yeah, a ton of people use windows 7/8 so he/she can say that.
A lot more people use the OSes I listed.
Consolas is nice, but for me it is too small for 10pt, and too large for 11pt.
I use Linux and install always Consolas.
Programmers designing fonts is cute but it's not good idea. Lucas de Groot knew what he was doing.