Except the key point you are missing here is that this is not how science works. It's not up to, or even possible, for someone to prove that something doesn't exist. People that are saying BF is real need to prove that because of it right now, it has never been proven properly. To turn it around and say here is your opportunity, science is on your side, etc is backward thinking. Science is my side? How is that exactly? Science does not take sides. Science has not, as of yet, accepted BF as a new animal. And until that happens the burden of proof is on the claim that BF does exist, not the other way around. That is simply absurd and ridiculous beyond the pale.
So many people here like to boast about science this and scientific method that and then turn around and say that science is on the skeptics' side as he charges us with proving that BF does not exist. Uhm, what scientific method exactly is that??