Historians + satanists= mildly interesting boards thread

Hey this is just something I found that was interesting ,
So im walking around a semi-semi-rural area near me and I stumble on a little chapel and graveyard I go inside and see that theres a vault attached to the chapel there are iron bars in front of a steel door and on that steel door is an upside down pentagram spraypainted on the iron door at first I thougt "pricks" and found it wierd that someone from that area would vandalise a grave, I got home and googled his name "Austin Cooper" and found he did a study on the hellfire club and the land around it in 1779, 8 years after it's revival (according to wiki) . So this left me with a few questions:

1. Did he do something when studying montpelier hill to piss off satanists/300 year old secret society ?

2.Did he join the club and do something to earn praise 300 years later?

3.Was it ne'erdowell youths and just a coincedence ? (I have ruled out this answer because it's boring)

Bear in mind this place is pretty secluded and in a nice area and there was no other graffiti in this place