Most of the submitted deepfakeson reddit are the first couple experiments of inexperienced amateurs trying out the technology. The worse examples are not representative of how the technology works, they usually indicate a flaw in how that particular person build their data; and the best examples are almost undistinguishable.

The technology works now, it's just at the stage where it's simple enough for a random person to build something but still tricky enough so that not everyone can build something good; it works, but not necessarily right out of the box.