flasks aren’t allowed in blitz, and they already have a fix for rated pvp:
this is what they posted, they didn’t say anything about flasks in unrated, or it being to make it new player friendly, which makes no sense because new pvpers are already experienced wow players who already know about flasks.
if anything, this just seems like a bug and people are jumping on it to troll. the only joke here is thinking the gap between noob and bloodthirsty is only a flask.