Making a poor mechanical connection and hoping solder will hold it together is not good practice. I have seen many poor solder connections.
But I believe that was one of the main points of the original document, you wouldn't want a good mechanical connection masking a poor solder connection since the electrical connection is critical. A mechanically solid connection that has a cold solder joint is more likely to make it past initial inspection but will show up in later service.
Wire wrap was popular for awhile, I think it was pushed by AT&T/Bell as a very high reliability connection because when properly done the connector bit into the wire and kept this connection under tension. My Telefunken E1501 receiver has a number of the connections from the mother board to the front panel made using wire wrap. A lot of hobbyist tools were sold for wire wrap in the 1970s.