When potentially game changing new technologies are reported such as NgAgo gene editing, both scientists and the public get excited, but especially if such new reports stem from a single paper it is wise to take a cautious approach for a while. The key question is whether the new findings will turn out to be reproducible.
With the case of NgAgo specifically, the Nature Biotechnology paper reporting potentially very desirable gene editing properties, drew a lot of interest. See archived blog posts on NgAgo here.
However, recently many within the scientific community have reported consistent difficulties in getting NgAgo to function as reported. Gaetan Burgio did a guest post here presenting 7 figures of data that together paint a picture of NgAgo not functioning at all like CRISPR.