You have ask some good questions. I had not even wondered why socks BUT no shoes? Socks were not matched colors either. The note in the jar to make sure it would be intact? It does make one wonder if it was not a suicide but made to look like suicide. And LE not knowing his name would not have any way to look at other causes of death (foul play) Hard to investigate a death when you don't know who they are and where they came from. I am going to predict that when they identify him (and hope they do) he WILL NOT BE LOCAL. Maybe from out of state. Near New Orleans which draws alot of outsiders and tourists. Some interesting observations.
I would not dare to wonder about mismatched socks unless I knew the person or heard a friend/family member saying that it would be completely out of character for someone to dress like that. Some people are like "socks had to match no matter what" cause they're so used to wearing matching socks. But many (very many, probably most people I know) are of the attitude "socks should match or at least look like they do"). So it doesnt set any alarm bells for me.
But everything else is odd as hell.
Note and jar points at it being suicide and very well planned and thought of decision.
No shoes, rope made of besheet, light clothing may point at the location being very close to the victims home (or place where he worked/stayed) but... NO, cause nobody recognised him. And it sounds like a story people, especially young people would want to share, talk about - that would (should) lead straight to someone who would recognise him. But it didn't happen.
Let's say he really didn't wanted to be identified, wasn't local, came from somewhere far, maybe drove there, possibly hitchhiked... with no shoes? With no jacket? Then how he carried the bedsheet rope and jar to the location? In hand? In his pockets? Size not mentioned but both of these things sound like bit too large to not take some kind of bag or backpack.
NamUs says: "off Hwy 23, on a farm road that is in between Hwy 23 and the Mississippi River, near Alliance, in Plaquemines Parish" -
I am going to predict that when they identify him (and hope they do) he WILL NOT BE LOCAL.
No DNA available, no dental records available, no fingerprints available, no picture available, no case file available...
Cases classified as suicides aren't really investigated. That's low, low priority to this day, and unless his burial location is known there isn't even much of a chance for him to be identified.