Imagine if a person is hosting an important conference meeting. He wanted to click programs but clicked the shutdown button by accident. This would cause great embarrassment.
Having Shutdown button without prompting confirmation is a big mistake. For your own home use, this might not be a big problem but for business, it is. ha ha lmao
It is virtually impossible to click shutdown by accident in that situation. Once you click start, Shutdown is far to the right. You have to make an effort to click it. If you are looking for programs you are going up. If you want to shutdown, you have to go right and onto a different panel within the start menu. Unless your mouse sensitivity is through the roof, most people have to move the mouse almost an inch to the right to hit that button. To hit that button inadvertantly, you would need to be A) not paying attention to anything you are doing, or B) aren't knowledgable of the the overall start menu layout.
There is absolutely no problem with the design. MS gives the user the power to configure that button in whatever way they want and there is a drop down right next to it for more options.
My personal belief is that you were rushing and screwed up and that instead of owning it you made a client wait longer than necessary for absolutely no reason. Maybe the client wasn't in a hurry, but it is still a bad habit. Mistakes happen and no one would judge you for it, except here you are trying to persuade people that somehow MS's bad design is responsible. This is based completely on your responses.
Sure, maybe there was some lag in the connection and it inadvertantly caused you to click Shut Down when it wasn't intended. You could have rolled with that and garnered some sympathy, because everyone has connectivity issues now and then and it can definitely do strange things.
I respect your opinion on how the Shutdown button should be configured, but consider that there are plenty of pros out there with arguably far more experience with Windows 7 than you who think it's fine.