Probably we all appreciate the efforts of LE, and maybe that post was phrased a bit over the top. Maybe the frustration comes from lack of results for Molly and her family (and the community, should there be an ongoing risk!)
However, I am not ready to accept without question the competency of government employees, especially at the interface of traditional investigation with modern technology and modern social patterns.
I respect their authority and dogged hours of effort.
But I cannot forget things like the failure to investigate the shooter in FL after he posted his intentions in comments to a YouTube video. Well, the FBI did investigate by sending local agents to the home of the video poster (in Mississippi!) who had no idea who this commenter from FL might be. It was as if the FBI does not know how the internet works. Multiple levels of the FBI: tip line, tip investigator, dispatcher, approver, local agents.
(Please no knee-jerk responses because I don’t want this to veer off topic into a flame war about something I didn’t say. My point is I think there are some pretty smart people here and I think it is fair to dig into the investigative process. There are LE with more info than you, but it is not a given they are making the same connections as you.)