First off I think that too much of an issue is being made of this simple topic. There are obviously many ways one can make that type of connection.
Agree completely.
In my connection, the bare copper makes direct contact with the base metal of the spade at the solder point.
Why not use copper spades? Do you also remove the plating at the spade to get connection of base metal with binding post?
I have taken apart dozens of high-end wires (very expensive ones too) to see what is inside. At first it was utter dis-belief at just how fraudulent these expensive wires designs truly are.
I have done this also and agree. Also have seen some substandard connector installations.