Earlier quoted context omitted.
You are very much not in the clear if you block like this. That's just delusional. Copyright monitoring firms have many endpoints that look like consumer ADSL/cable... because they are consumer connections.
Yes, but consumer ADSL/cable..are still..within the USA IP Address list block. By blocking the entire continent, if you are paranoid, you won't be on that list. I doubt they will engineer much of a solution for non-local markets e.g. UK instance catching USA Ip address, though in the end it is not that hard to move that metadata around.
https://delimiter.com.au/2011/08/30/wikileaks-cable-outs-sec...