All due respect, but I disagree. When learning to identify flavors in wine, whiskey or whatever, the proven method is to highlight the flavors that should be present, normally through vials that are sniffed. This accentuates that aspect of the wine when the taster takes a sip. I don't think of that as weird.
To just serve a room full of people a series of umami rich dishes and tell them that what they are tasting is umami does nothing to help them, and I would feel that I was being arrogant.