ECHELON was an open secret much earlier and the European Paiament had written reports on it in the 1990s.
People claiming it was conspiracy theory were fucking idiots given all the reputable evidence. The stuff about Boeing and McDonnal Douglas was late 1999 / early 2000.
European Parliament report was issued in 2001. The difference back then was that everyone in the general population considered you a nutcase if you described it to them. These days, only perhaps 60% of people consider you a nutcase.