It hit you pretty fairly, there. It just adjusts the visual position of the hook once the hitboxes overlap so that it's more centered (It hit your "wing", but Blitz's Q visuals are coded to be around your center, so it jumps a little)
The only possible issue I can see is that hitting the front minion might have been more "fair", given how it looked.
actually, if you stop right when it touches you, the hitbox of your champ (is that how it's called) looks like it's slightly overlapping the minion's. I agree the hitbox of Blit's Q is BS but I've seen worse lol
I'm more concerned about the ridiculous damage dealt at min 3 :v)