Just because you had aliens last week doesn't mean that you can have Bigfoot this week. Blurry photos and poorly substantiated ravings don't become good evidence of things until you get a lot more genre savvy.
And just because the thing you have matches Bigfoot on points one, five, and six doesn't necessarily mean it's going to be like Bigfoot on points two through four. Especially if there's not a unifying theory of Bigfootness behind them and they're just a list of aforesaid poorly substantiated ravings.
I'm not angry. I'm trying to get inside Scully's head.