Such lists can be queried by those that are properly connected, typically LE/three (and in some countries four) letter agencies if your name ever turns up in some other context and then it might be given some weight, but other than that I wouldn't expect anything to come of it assuming that you are telling the truth. Such inter-service requests for information on particular individuals are pretty regular but someone first has to ask for you by name, and in a country with proper privacy protections typically a judge would have to sign off on such a broad request, but these mechanisms are not always perfect.

Reading threads isn't a crime, but hanging out in places where lots of criminals hang out doesn't help you in the association department.