The genie animation is actually important. It illustrates to the user that the window is being physically relocated somewhere else. This matters for a new user

The genie animation is actually important. It illustrates to the user that the window is being physically relocated somewhere else. This matters for a new user who doesn't know what "minimize" is and could accidentally click it wondering how to get the window back. The animation shows you exactly where it went and what you need to click to get it back.