Your really taking Seifer like a rat.
He taking stuff seriously he turned against his own garden.
When he was fighting when he in the party he was looking at that like a joke but the rest when he not ? He taking it seriously.
When he fight squall in the starting movie seq. You can tell he serious.
When he launch his attack against another garden 2 his old 1 he serious again.
Each time you fight him he doesnt mess arround.

Your judging him like he was some circus clown thinking he a fucken weakling that doesnt take anything seriously.

The only 1 that hardly give a shit in FFVIII is Squall.