Are they also doing this demonstration at events at Apple Stores? If they were really serious about their message, and not just trying for a pissing contest with Microsoft, you would likely hear more about their efforts against Apple. My bet is that they have confused themselves in their fight against paid software, and made it a fight against Microsoft.
Are we really going to get upset about this? Where is the rage from Mac owners that Safari is tied to the Apple OSX? Why is this only directed at Microsoft?