Not necessarily. All the "comp checks" and the one requested "update" could be competent and ethical appraisals. And as you have agreed, the unethical do not need the "comp check." Just look at what your arguments would look like if you would stop using the term "comp check" and called them what the are, appraisals. That was the gist of one of GH's post.
Yoiu are describing something similar to "forum shopping." That's when people filing a legal claim try to get the case in front of a specific court, because they anticipate a favorable outcome. Notice, the lawyer who wants the word "God" taken off currency and out of the Pledge of Allegiance always seems to end up in the Ninth Circuit. Coincidence?
The problem for your argument here, is that as long as the court is giving its own opinion, they are not doing anything wrong. Inside the profession, one cannot stop the forum-shopping of outsides. That is, the ASB cannot regulate clients.
The solution you want has to come from the GSE's or federal regulatory agencies. They are the one in a position to curtail forum-shopping by LO's and MB's.