Why was Lauren Mayberry so rude to the guy that shouted "marry me"?

Youtube the words: Lauren Mayberry and Marry Me.

I'm really disgusted how she turned it into an attack on women. Even worse is how her fans cheered her on. I see girls doing that goofy "marry me" thing to famous singers. She cold have easly rejected him by turning it into a funny joke that was comfortable for eveybody. But no, she got all ultra serious feminist on him.

Seriously why is it ok for Katy Perry to get kissed and groped by a female fan? Yet a guy shouting marry me to Lauren Mayberry is evil and sexist.

This lady wasn't charged for kissing and groping Katy. (Not gonna post every pic)
Why was Lauren Mayberry so rude to the guy that shouted

After math of the event.
Why was Lauren Mayberry so rude to the guy that shouted "marry me"?

Now if a dude did this he would be locked up already and CNN would be all over it.

Why was Lauren Mayberry so rude to the guy that shouted "marry me"?
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