Why do people hate "duckface" pictures?

The duckface photo elicits strong reactions from people. People seem to hate it, yet every other girl has it on her profile. So it's hated and loved at the same time. I took a bunch of pics and was uploading some to my instagram and my friend was like "NOOO" when she saw the couple duckface pictures. Why did she act like that?
Why do people hate "duckface" pictures?
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