I am stating my take on the case. I tend to be pretty quiet most times... but I feel like I have to have my say on things, I feel pretty strongly about this one, and I have for a long while. Sorry this is so long!
At the start of the investigation, LE throws as wide of a net as possible to include as many suspects as possible, so that they can be more assured that the real suspect is included. They accomplished this by a few notable methods: repeatedly asking for tips, setting up a reward, placing electronic billboards far and wide... etc. of course, they also have suspects based in facts of the case - and RL for example would certainly be included due to the fact the bodies were found on his property.
Early in the investigation, they were calling for people who had seen a hitchhiker, or someone carrying a knapsack IIRC. If RL did have a suspended license they may have been trying to find a witness that saw him (because they assumed he wasn't driving) or, he told them he hitchhiked to Lafayette, if that was his "alibi". So, it seems possible that LE was intensely interested in RL from the early days, although that is just a possibility.
Strikingly, we have numerous, numerous, numerous, public appearances by one person, RL. How odd, but! not uncommon that the criminal actually takes to the media and tries to control the story. We at WS have seen this in the past, have we not?
So, fast forward, and we now have a big new investigation into RL's property, including impounding his vehicle for forensics, a long and involved search warrant for items on his property, and in his home. This comes after an initial search of his property that was done weeks ago. Add to this, LE hauled him into custody on a probation violation.
I came to read about this case for the first time after the video stills and the voice capture had been released. But the very first thing I viewed about this case was a news report with an interview of RL within it. The next thing I did was look at earlier news reports that did contain the pictures and the link to the voice capture. As soon as I heard the voice capture, while looking at the stills, I got chills. I was convinced that RL fit the picture and sounded just like the voice... and here we are. I am usually the LAST person, or close to it on the forum to jump on a suspect. I tend to hold out until thee is solid irrefutable evidence. but I got chills, actual chills when I saw them. So I am going with my gut in this one, and really, LE's actions have done nothing whatsoever to dissuade me!
IMHO YMMV