Sneaky Peekers in Secretive "Fen Diggers"

We Dig Heritage note: "it's concerning to see a Pay to Detect Rally Group using the HER to encourage people to buy tickets.  When found out try to remove people from the group.  Something to hide?"

The Fen Diggers Metal Detecting Group is a Facebook-based private group run from Leverington-Wisbech. It was founded first as "metal detecting East" and/or "metal detecting East Anglia" in January 2019. Then its name changed to the present one at the end of August 2020. The name of the organizer is unknown to me. They describe themselves as:

A friendly run group with rally days, share finds, gain knowledge etc we are located Cambridgeshire but welcome people from all over. Private: Only members can see who's in the group and what they post [...]  What's shared in the group should stay in the group.

Hmm. A private club for friendly finds sharers. I'd put it differently.

Take a look at this: "It seems not everyone in this group is here for the same reasons we are". This is the same thing that happens on all the forums (recently on MDF). The purpose of this purge is to remove archaeology/conservation conscious observers. So if that is the case, who are "the rest of us" who are left? Once again, what is "responsible metal detecting"? They've just gone down to 657 members from 830 this morning.