The real question is why did the devs not have the foresight to see this being a problem. I don't feel like re-rolling everytime someone outside of the devs discovers this amazing op skill/support.
This isn't Beta anymore.
Yes, because no game, ever, rebalances skills because the community found ways to use them in situations that got past people....
/eyeroll, and lots of sarcasm should be used when reading the above.
Now, lets get serious.
This is the first ARPG I've ever played. I came to this game, after a year of being "out" of online games. I had burnt out in WoW, and just couldn't take it anymore.
Let's use WoW as an example. a MUCH LARGER
dev / playtest team goes through that game, and works through all types of iterations of new skills, new abilities, new talents, armor set bonuses, and yet.... There are well documented cases of things being BROKEN after it was released, because that one guy, did that one thing, that allowed them to do something, that the team of developers didn't intend to be done.
Case in point:
Mage who used spellsteal to go to town in Naxxramas and solo the 25 man version of the raid, because a spell on a monster was capable of being stolen, over, and over, and over, and over, and over, while not resetting / checking the values associated with the player character. It instead kept the values in place from the monster it was spell stolen from.
It happens. Getting bent out of shape, because something is broken, and using excuses like "Well, they should have known!" works in a vacuum, but not in real life, practical applications.
It's going to get changed. It should get changed.
No gem should be an absolute no brainer for people to use, regardless of their spec / class / design.
No gem should be the basis of a build that allows you to kill things, merely by walking around and letting them hit you, no matter if it was released that way or not.
You're right. It isn't Beta. If this were Beta, they could easily take a month or more to work through what they need to change, let it go as is, and then fix it, completely, and totally, all at once.
This isn't just a nerf to those who felt that this was a "free pass" to awesome damage.
This is also a buff to people who use it in a way that could have created an infinite loop, resulting in the death of their character.
This is a reasonable change. It's not the end of the world. Getting bent out of shape about it is silly, and if you built your entire character around the premise of getting this gem, and abusing it, you deserve to have the character sit there, useless, because you came up with a creative use of game mechanics that wasn't intended, and is being corrected.