Earlier quoted context omitted.
Office is using web technologies because they don't want to rewrite their code for Office 365, so native users get the Web stuff on a Web widget instead of a proper native UI. Which is kind of tragic, given how Office was the testing ground for many Windows UI components.
Who cares if it just works? Who cars if it's made in Flash or in COBOL when it just works? What's sad about this? It just works right?
I stop here in order to not throw profanity at MS engineers.