Why these two?
Because a troll is using them to try to extort billions from other companies. There's no point in reviewing the "method for swinging sideways" or "method for exercising a cat" patents because the patent holder isn't trying to abuse them. They just filed those patents to show how low the bar is.
I'm surprised that Apple wasn't able to get these patents reviewed previously, but the fact Samsung has done so probably means they were next on Smartflash's hit list. If people ask "why didn't Apple settle instead of going to trial" it is because if the patents are invalidated Apple owes nothing. If Apple settles they'll still owe the money (unless Smartflash agreed to a clause that says they don't if the patents are invalidated - which no troll will EVER agree to)