Sure, but people have memory and if you block people who aren’t even going to contribute to the running costs of the site via the channels they provide, never mind profit, then from the site owners perspective it’s pretty great if you recognise it as a site you don’t want to visit as you likely won’t come back
If it’s a grave of someone in living memory, then sure, it’s grave robbing, but even if someone knows it’s their 224x great grandparent then if there’s no memory either directly or even via oral history then it’s definitely archaeology
There’s a very blury line somewhere between the two, but it’s up to whoever shouts loudest or digs quietest to define that