No, since not everyone is in the same alliance/party. It only seems to matter if anyone is on the hate list to begin with if everyone ends up dying over and over again. If you go into a WoE solo, but there is the max number in there and you die, it'll go to the next person that was on its hate list. You'll be able to get up and move away from the mob to a safe spot and recover (assuming there is a safe spot). However, if you are in a pt with other players and die then get back up while someone is in your pt fighting it but they end up dying...no matter where you go it'll systematically kill everyone in that PT over and over again until all members are dead and stay dead or someone gains enough hate to keep it from killing anyone who raised up.
On my normal server I usually do WoE with some friends just to kill time (it is fun, bad drop rates aside) and we figured this out very fast. If we have greater than one party we'll usually break off from the cluster of the rest to fight individual mobs, but if a couple don't and end up dying or the party that broke off dies, that mob will go over to the rest of the members who should have no hate at all and kill them anyway.
It isn't Zone participant hate, just alliance/party hate. If the break away party/alliance all dies then the mob will reset back to where it was pulled from.
As for the hate, that is probably because people treat it similar to campaign being as the reward system seems to be linked in that fashion. Additionally there is auto-raise after being dead for 30 seconds so people don't tend to care about being full-blown hate mongers to be sure they get as much point count during the fight. Thus you have blm standing back chain-casting until they get hate and die or DD that go full on nuts.