There is no "general acknowledgement" of who killed the Shermans because TPS has never released one iota of evidence (or lack of evidence) they have in this case. In other cases, we get specific info on who, what and why search warrants were granted. KD, on behalf of the media, which is a usual practice, has gone to court to release this info, but has been unsuccessful in this case. So we don't have any credible LE investigation info to point a finger at anyone.
Other cases like OJ went to trial and although found not guilty, many people could determine that the case was "solved" in their minds, despite the lack of justice. If the Sherman case never goes to trial and TPS never releases info, there is no way it will be solved in our "minds".