Is this considered a good world PVP scene? I've seen him take on more in the past.
Is this part of the game still alive and well?
Playing WoW today, you are much less likely to bump in to other hostile players. Fights happen occasionally, but due to flying mounts it's very very easy for somebody who doesn't want to fight to just pick up and be halfway around the world doing something else in 5 minutes. The Looking-For-Dungeon tool that automatically teleports you in to dungeons also removed a lot of the PVP that happened around the summoning stones that sit outside.
Back before the first expansion it was a hassle to get away from other players who were attacking you so people often got friends or guildmates to defend them while they were questing. That resulted in some pretty epic spontaneous world PVP where you'd get big 50 player scrums going on in the middle of nowhere.