BONs not taking action against violations?

I have had two nurses contact me about being reported to the BON from their employers- fully questioned, given statements and did not get legal representation. 

One failed a random drug screen in July 2019, had two stints in rehab and is working with her employer to complete employer random urine tests, AA meetings (Caring for Caregivers) program. She was diagnosed with substance abuse disorder as well.  This nurse told me on July 4, 2021 that the last contact she had from the BON was “to wait for her consent agreement.” Well, the employer program, Caring for Caregivers requested an update on her license as no action has been taken against it. As of September, 2021 this nurse told be there BON “closed the case against her.” Her license remains unencumbered. She did have a board order- which she violated as she continued to drink and failed three(!) employer EtG alcohol urine test- which was documented and also sent to the BON (I have a copy of this letter as she sent it to me, her board order noncompliance and suggestion from her employer program to be monitored by the BON as their drug testing programs can observe drug screens.)

How could the BON abuse their power and determine what to enforce and what not to!? I feel like this could be a huge class action lawsuit. 

I have other stories about recent issues my nursing friends have come to me that had with contact/conflict with the BON and no reprimands for serious infractions. 

Is anyone else seeing this in their states BON choosing what policies to enforce and what not to on certain cases? I’ve seen boards intervene with consent agreements for nurses that mis-documented or mis-delegated.