I wonder how you can go through several paragraphs of explaining what node reputation might mean and end by saying it means nothing. Node reputation is indicative of something even if we can't say exactly what that is. It isn't entirely arbitrary. It is a function of node visibility, popularity, and noise.
The above serves as some explanation of why I downvoted your node. Its reputation now reflects, in some small part, my opinion. Not that it matters...
"My two cents aren't worth a dime.";