There is a lot of this around.
An egotistical need for your story to be the one which is published and shared and for some reason finding other people as your enemy and deciding to go after them thinking it will make what you have achieved feel more of an achievement. It's really strange behaviour.
It also gets to a point where someone is effectively arguing they're better than you because they managed to get fatter than you before starting to lose the weight.
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I have been accused of being him on a couple of occasions I think