Agreed. In fact, all of this information is not only fine, but absolutely necessary if the person attempting to do this work is NOT an electrician. For them, it is even more important for them to be told the depth of possible confusion and the amount of information it might take to figure it out.

If that discourages them, then they'll be guaranteed not to kill themselves or perpetuate the problems that are there now.

Since deadly levels of electricity are involved, if this discourages the amateur, well, that's a good thing.