It is not semantics at all. For years appraisers have based condition ratings for comps on data provided by third parties. E posted that he would not be comfortable doing that for the subject. I am just asking why (other than - we have always done it that way) that is the case. In the typical appraisal report these days there are three to six comps, and condition and quality ratings are provided for all those comps, and that is almost always based on third party data. So, what you call semantics, is just reality. It also illustrates that many of the "arguments" made on this topic are emotional responses that are based on fee protection rather than actual logical debate.
Is there risk in using third party data? Absolutely, I don't think anyone is saying otherwise. What is being tested is the degree and impact of such risk.