I got so close to two of them that I had to drive around them. They were in Colorado, but on Hiway 62, a major trunk hiway. Prior to that I really had no opinion on BF. I still don't, my knowledge that they exist is no opinion. They are quite real. Get 8 feet from one; there is no ambiguity.
The reason there have been no other films like the PGF is immaterial. There have been other videos that are legitimate. And they are all debated endlessly, which is how it will be for all time, because even if BF is acknowledged by 'science' the problem will be that many people will not want to believe its out there which is how it is right now, BTW. Some other debate comes from those that *want to believe* but don't want to be a smuck either. So they debate the evidence under whatever guise works. I think the debate is healthy; like any other field there are a lot of hoaxers with who-knows-what motivation for their work, and they need to be ferreted out.