Never having been involved with 'the industry', I cannot say whether or not it is the "default method used throughout the industry" but, as I've said, I personally prefer to avoid it (in favour of an 'explicit long wire') and I certainly would not want to suggest/recommend what you call the 'default method' to random DIYers who may read what has been written. However, maybe that is 'just me'.John, if there is distance between the two ends, then the default method really is to use the earth rather than a long wire. That is the default method used throughout the industry.
Kind Regards, John