There's nothing in the description which alludes to looking for a specific cache. I see mention of it in a log though.
Well they obviously didn't tell the reviewer if that was the real intent.
Of course there's nothing in the description that alludes to looking for a specific cache! The event host knows better! All of that talk was done on FB. Every person who attended knew why the event was at that GZ! There is mention of the true intent in almost all of the logs. Thing is, this was an important/historical event that was used as a cover.
It's a common way to get around the guideline and from my standpoint as a reviewer, perfectly fine. I publish any event that conforms to the guidelines according to the description on the page. What people actually do when they get there is out of my control and really none of my business. Where I live a common practice is to have a "donuts and coffee" event. Most locals know they are thinly disguised gatherings meant to hunt caches. They are usually held at a trail head parking lot and last about 30 minutes to an hour. The cache hunt aspect is discussed among potential attendees via emails, Facebook, forums, etc., but all the reviewer is concerned about is whether the coffee and donuts event complies with the guidelines as it is written up.
As the reviewer who published the event, all I have to say is "This".
The event listing page conforms to Groundspeak's event guidelines, so it was published.