Just as in any development process, you need to establish rules that people need to follow. "Don't rename the event" is one of them.

IMO, you're making too much out of this.

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>Look at it from the other direction.
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>C# Programmer develops an app with a button's Click event wired. The XAML is pointed to this event. Later the designer decides to rename the event in the XAML file. Code is most assuredly broken.