That's because the way Hagakure is now, once they make this change it won't do anything. The nerf to Save TP is also a Nerf to SAM as they can no longer use Hagakure to jump to the next WS. SE is upping the value so that it's not completely worthless as an ability.
So yes, SE is nerfing SAM, just not as hard as their nerfing Misers roll.