well, if that is the policy, so be it.
TBH though, I don't understand the rationale, and, if it were possible for the policy to be reviewed, i think that might be helpful.
By way of analogy, if a member here says in a review that an SP has offered, or suggested, barebacking, to me that is highly useful information, so I can avoid (thought for some i guess it might be a plus)- but of course, the allegation in the review may not be true.
To me, drug use is exactly the same- if an SP is a drug user/ abuser, I would like to know.