Yes, that is the general gist of it.
The possibility exists that not one person you are dealing with meets the standard of "being a Satanist" in the first place.
There are genuine bona fide Satanists in the US military, who serve proudly and with honor, no mistake about that.
Whether you have met one or are interacting with any currently is an open question that we cannot answer, except by excruciatingly tedious case by case examples, which is not our job to sort out, thankfully.
A "group" of Satanists who meet regularly is almost but not quite an oxymoron. Smells fishy to me.
I am afraid that the bad news as far as discharging your sworn responsibilities is concerned, is that there are and will be no officials from the Church of Satan
available to step in and sort this out for you, as there are in all other religions.
If you are serious about preventing abuses of the sort you mention, it may fall entirely upon you to study Satanism sufficiently well to recognize bullshit.
That is not a task I envy.
And, I agree with everything Magister Phineas said, and also agree with Magister Nemo that contacting the Church of Satan
Central Administration via email is best.