re: How can you dislike Manziel?

In summary, to answer the OP's question, these are the salient reasons why some people dislike Johnny Manziel:

He's Cocky
He's Arrogant
He lives in the biggest house in Kerrville
He celebrated after touchdowns
He's a douche
He lacks respect and purity for the game
He shares a celebratory hand-signal with his teammates
His fans defend him
TPOS
Rules don't apply to him
He was accused of something for which there was no proof
His gay antics


I think we've all learned much here today.
Carry on with your weekends!