There was a short, awful period a few decades ago when those ghastly Champagne "dishes" (wide, shallow glasses) were fashionable.
The Champagne instantly went flat. Yuck!
But ... some people don't like the bubbles. They use those Champagne "twizzers" to fizz up the Champagne ... all the bubbles pop to the surface, and the remaining Champagne is less fizzy. Weird people, mostly.
For me, the whole point of Champagne is the bubbliness, the way it goes up your nose, and looks pretty in the glass.