You're assuming that too much would change the same. If they removed all the lag, it wouldn't result in everything being the same except what you see happening. Removing all the lag would mean the mobs would react faster on your screen. Since that is what the lag is doing. Actions by everyone except you, including enemy movements, appears to happen a fraction of a second later than it does.

As for my position, that has nothing to do with my stance here. SE doesn't pay us a dime, and we call them out whenever they do things we don't agree with. What does influence my stance is a basic knowledge of networking and game design. A little lag is unavoidable, especially with the amount of data being transferred with an MMO. All they can do is try to shift the lag somewhere, and no matter where they put it, there will be problems.