Seeing as Blitz was, generally speaking, ALWAYS first-pick ban, this clearly needed to happen. Even on a good day, 90% of unranked players refuse to stay behind minions when laning, and it only took one ill-conceived last hit to ruin your day.
It'll still be a pain in the ass late-game, so don't kid yourself. This just brings early game laning back into a manageable state; persistent grabbers will just have to start buylisting mana potions for the first few levels.
I would have rather seen a reduction in its range, honestly. Goes half the screen, dunnit?