The video takes a very casual approach to the battle that has had an serious tone since the mid 1990s, and has sailed through especially tough claims of Microsoft CEO Steve Ballmer, who described Linux as cancer back in 2001 and repeatedly noted that Linux is violating Microsoft's patents. However, the casual tone in this video is friendly and even ends in offering Linux a truce. Can Microsoft and Linux co-exist? Microsoft thinks so.
At least on this level, Microsoft admits that it was wrong to consider Linux' networking ideas as "childish", and concedes that there is bickering going on still today. However, this virtual birthday cake is a nice gesture that surely paints a how-cute-smile on your face. As mean as Microsoft has been, this video is a nice touch.