d.
My support for the hybrid appraisal process is based on one thing, and one thing only - the data from the testing. Appraisals based on a PDR rather than a personal inspection are far more likely to report an appraiser condition rating that aligns with the actual definitions, and such appraisals are far less likely to overlook necessary repairs and/or inspections. As far as I know, no one questioning those findings has actually done any analysis of their own.
Lastly, if one asserts that data collectors are providing appraisal assistance and need to be cited as such, do we also need to cite the tax assessor or whatever source we used for the site size? I assume that most are not personally measuring the site size. The truth is that appraisers use third party data, specifically third party data about the subject, in every appraisal. They are just accustomed to gathering certain data elements themselves, because for many years there was no other way to do it.