Eliminating potentially biased words makes sense, and those words are easy to identify and remove.
However, Fannie/Freddie declaring certain words are "subjective/not objective" distorts USPAP - USPAP (paraphrasing) says the appraiser acts objectively. It does not warn/prohibit using words that some entity deems are not "objective." The sales comparison approach is a comparison of properties to each other. Therefore, some properties will sell higher or lower than others or have superior or better or inferior features to each other. We already have the C And Q ratings for the condition or quality - average/good/lower, etc, are used elsewhere, now we have to add a context statement for using those words, which are almost unavoidable.
It creates another roadblock around appraisals - more minutes to slow down delivery, see reports kicked back, and make appraisers so defensive that it is hard to concentrate on what is important.