Why would authorities do that!
That's so easy on him , that is provoking others to go away with the coins

I remember considering investing 1.5 BTC to this guy's business... glad I didn't. Fucking scammers everywhere.

Good thing this kind of people got arrested finally, and hope they stay behind bars. May this serves as an example for potential scammer in the cryptoworld.

It seems that Ryan Kennedy made little attempt to hide his real identity during his scamming which is not normal behavior for scammers, who tend to cover their tracks well and stay anonymous. Plus he described himself as a self-proclaimed scammer which isn't very smart. Karpeles could have scammed but he blamed it on an exploit so we'll probably never know the full story of what really happened. This guy seems to have just run away with the money in plain sight and even after his identity was exposed which is pretty dumb.

I think hardest hit would be the dogecoin community. Imagine the sense of betrayal surrounding the whole issue. When we have this sort of thing happening, what really matters is the reputation, not to mention morale and how negatively it can affect the sentiment and bring down the mood of the community.