The article doesn’t say who initiated the interview. Wilson was involved with the NRA at the time of the alleged incidents, and is a somewhat known pollster. So the station could have called him to ask if he knew anything. Or he could have done it. he is a sleeze, like I said before. It’s just that there is no evidence that he was a source for the politico story.
There’s also no evidence that he ever discussed anything with the Perry campaign, but that’s a whole other guilt-by-association thing.