If someone describes Australia day as "Christmas for Bogans", would that be a metaphor? What stereotype is implied in this statement?

If someone describes Australia day as "Christmas for Bogans", would that be a metaphor? What stereotype is implied in this statement?

The term bogan (/ˈboʊɡən/) is Australian and New Zealander slang word that can be used to describe a person with a working class background, or whose speech, clothing, attitude and behaviour exemplify a proud working class mentality and depending on the context, can be pejorative or self-deprecating. [Wikipedia]

If someone describes Australia day as "Christmas for Bogans", would that be a metaphor? What stereotype is implied in this statement?

On another note, is there a name for a list of audio techniques? Eg visual techniques might be juxtaposition, contrast etc..but what about for audio? Is there a name for these? I really need to know

If someone describes Australia day as "Christmas for Bogans", would that be a metaphor? What stereotype is implied in this statement?