Out of everything terrible about BfA, the one thing I think they got right is Warmode. It gives everyone the option to either PVP or not, gives a nice reward if you want to hit the world with a high level of risk, and allows everyone to either engage or be left alone. I've played with it both On and Off, and usually just prefer it Off.
Some folks just love it. They love the organizing of a force to take on the enemy. It's not about "fair fights", they love rolling through enemy players and espouse faction pride. A lot of people are hoping that when they gank somebody that this person is gonna get a group together to fight back.
Is the system perfect? Nope. But since it leaves the power in each individual's hands, it's a pretty decent one, and is at the very least a fair one.