The article is reporting on a privacy violation. If the fact that it also expresses opinions you dislike makes you want to disregard those facts -- then you're making bad decisions and you should do better.

Personally I think it's valuable to have this information out there. Both for the folks whose privacy was violated, and for people who are concerned about how closely the gun industry works to coordinate its customer database with lobbying groups. (PS I own a gun and don't like anything about this news, from either of those perspectives.)