Correct. In the world of aircraft maintenance and espeically in the world of police car two way radio work, which was my field for 30 years, I have never seen this type of connector used in high current applications. The spade connector is actually fine in dry, low current applications although I prefer a good quality crimp connector. Remember the old 1968 Chevy headlight connetors? HEAVY DUTY.
More examples of contact resistance causeing melting and other not nice things. Many bikes have this problem One of the primary offenders is the cheep stator/regulator system most bikes use. Take a three phase stator, unregulated, and run the 6 wires to a big heat sink with a voltage regulator that burns up extra energy as heat in the heat sink.