Why is that wrong? I also applauded (internally) when notifications were added because it was a feature that I wanted and I didn't care that Android had it before because I wasn't using an Android phone. I bought all of the Google-branded Android phones when they came out and I still preferred iOS and the iPhone so having that feature was worthy of applause for me. I don't see how the wallpaper thing is any different. As much as I would like to have had the ability to change wallpaper before then, that wasn't as important as all the other things I cared about more.

I've never been to one of Apple's events, but as a viewer of their videos some of those applause breaks have me convinced there are giant "Applause Now" signs. I imagine them being on more than they are off by how over the top their dialog is written. Or they fill the air in the room with some sort of gas that makes the attendees very susceptible to the RDF.

Those are much more fun explanations than just realizing they probably have plants to start the cheering in a room full of fanboys