When it comes to drinking and serving champagne, most expect to see the drink in a specific kind of a glass. They know what a champagne flute looks like and they expect to receive the drink that they are given in that kind of a glass. There are actually other options that a person might use if they are looking to do things differently, including the option to use a shallow champagne glass.
If a person wants to use a champagne glass that has a different look to it, they might choose to use one that is made in a shallow way and that is not as tall as the traditional glass. If they would like to set things up for a whole different drinking experience, they might choose to purchase a shallow glass. There are no rules as to the kind of glass that a person needs to use to serve champagne, and each person should find the glass that works best for them.