Good information! Also always weigh down the winch line, when recovering yourself and others.
As for the "Don't use a Chain", not sure about that. Never seen a chain snap, even when being puller by a half submerged yota, against a 04' Cummins. Most chains i use are logging chains and are meant to be tugged, and strained. people using the chain should have enough common sense to know what a proper/ideal chain for recovery would be. Although I know some people cant wrap their heads around that, and end up using a thin "dog-chain" and hurting themselves..I just think that most people, may use a chain for recovery, instead of "straps".