The original reviews of the PG film from the late 60's and early 70's documented by qualified scientists were all along the lines of Backdoc; it cannot be confirmed that it was not a hoax, even though if it was a hoax, nobody can figure out how a couple of rodeo yocals from Yakima pulled it off.
Since that time we also have had Greg Long's book claiming that it was hoaxed, which has been fully discredited, as well as the Munns Report and several others who have focused on the photography aspect of the film. Instead of proving it to be a hoax, these studies have supported its authenticity.
While there have since been several other films and photos, none show the creature so clearly for so long, in motion, and with the documented locational history of sasquatchery that the PG film features.
In short, the best film footage is essentially disregarded as valid evidence. This is despite the similar claims that the lunar landings were a hoax, and those claiming such are considered wackos. The analogy is identical. In short, science is relegated to a belief ideology, with the believers/disbelievers both citing "Science" as their foundational basis.
I find it more disbelievable that better film footage will either surface or would motivate Science as an industry to act than the possibility that the PG film was hoaxed. Denial, as a psychological reality, is widely accepted by Science, and its hold on this phenomenon is more than obvious. Yet when I cite that, even that is denied.
If the PG film is not enough evidence to warrant action, or is not to be even accepted as valid evidence of the existence of sasquatchery, than the lack of a specimen since the advent of modern Science, at least going back to Darwin and his ideology, pretty much confirms that sasquatches don't exist.........or will never be allowed to exist.