That means absolutely 0. Many of us here treat sleuthing as a part time job (if not full time in a couple of cases) and we know a lot more generally about missing persons cases than the average Joe. Even if LE is nearly 100% certain the missing person is dead, until they have a body the person is classified as missing by most law enforcement agencies. There are several levels of being missing. There's "missing" indicating an adult who may or may not be in danger, there's lost/injured missing for people who are probably lost, amnesic, etc. and there's "endangered missing". Endangered missing is a classification for people who have most likely met with foul play. Maura's case is classified as "endangered missing" by several LE agencies. Her NH cold case file online says the circumstances of her case are suspicious which is really just another way of saying "we believe she met with foul play".
Furthermore, Id like to point out that the chief of homicide unit in NH has stated that there was a 75% chance of someone being prosecuted in this case and that was the exact reason more public files weren't released.
Am I unwaveringly saying Murray was murdered? No, at this point I think anything short of her being abducted by aliens is possible. You're leaving out the obvious: LE has evidence no one else has and they have chosen to label her case as "endangered missing" and "suspicious". I think that says something.