Are you sure this prohibition on "removing cultural heritage artifacts" applies to private land ? The link's texts jumps back and forth between what applies to public land, vs private land. So I'm going to suggest that this "prohibition" applies to federal or public type sites. The same can be said of any nation on earth.
Notice it also makes a distinction that "Many municipal parks and public greenspaces also prohibit recreational metal detecting" Well gee, what does that tell you ? That OTHER "municipal parks and public greenspaces" do NOT prohibit (lest the original statement would have said "all").
K1DDO1979: Everything I'm reading there, could be said of the USA too. I mean, heck, we have ARPA here. And there's been no shortage of archies (or persons assembling FAQ's like that, who perhaps consulted archies) can phrase things in "dire sounding ways". Yet the reality is: There's no shortage of places to md here, and ARPA only applies to federal land. So too do I wonder if the wonderful "dire" wording there is, like here, only for public lands.
And seriously now: Is anyone following you around in farmer's fields in Nova Scotia to study the age of each item ?
You can find "dire stuff" for every single continent on earth. To me, your link actually seems quite inviting. Because it gives an outright allowance (albeit riddled with some archie talk, that .... ok, just don't hunt with archies on your trips).