If the proposed change was made, one person downvoting someone has the same effect on experience as 2 people upvoting. That means that it takes the concentrated effort of fewer people to try to strip a monk of all XP.

The second change that I saw proposed (I did not come up with it, I saw it flow from, as I recall, tye in the chatterbox) would make it very hard to say, I think so-and-so is a bozo, I am going to take down their experience. I assume that that is what happened to me when I see several posts in a row get -- inside of a few minutes That looks like one person deciding to take me down a notch.

Were it, in fact, me writing an abysmal post then you would expect to see that one post get multiple -- votes in a row. With the exception of the controversial one that you just responded to, I have not seen that happen.

Incidentally I have seen myself put up what I thought was a good post, seen it immediately hit -1, and then watched it start climbing. That really looks like a person with a motive and not something wrong with the post per se.