It’s already been disabled with the 2.1 update. Not sure if they have since found another work around, but it will be a constant battle to keep it working, every time Apple updates the software. Apple will add copy/paste to the iPhone eventually, I don’t personally see any value in trying to deal with this hack to get copy/paste temporarily, especially when it will never work in the iPhone native apps like Mail or Safari. I’ll just wait for it to be added officially.