Anyway, you still use Lorem Ipsum and rightly so, as it will always have a place in the web workers toolbox, as things happen, not always the way you like it, not always in the preferred.
That's not so bad, there's dummy copy to the rescue. But worse, what if the fish doesn't fit in the can, the foot's to big for the boot? Or to small? To short sentences, to many headings, images for the proposed.
A client that's unhappy for a reason is a problem, a client that's unhappy though he or her can't quite put a finger on it is worse. Chances are there wasn't collaboration, communication, and checkpoints, wasn't.
When it's about controlling hundreds of articles, product pages for web shops, or user profiles in social networks, all of them potentially with different sizes.
Elements things can break, designs agreed upon can have unintended consequences and look much different than expected is quite a problem to solve.