I believe in 50 foot Anacondas and Pythons, becuase both species exist, have been well documented. The giant squid, sure! There were squid known all over the ocean. The fact they finally found a huge dead one shouldn't be a big surprise.
And what of all the BigFoot hair that should be on trees, and all over?
Do the forensic BigFeet go around with their Sasquatch brand vacuum cleaners sucking up all DNA evidence of them? Of all hair samples ever tested, they were all 100% matched to known animals.
As far as Bigfoot being in Vancouver, thats easy to explain, they summoned the giant squids from the deep, saddled-up, and rode over on their backs.
And they wore Python boots.
I once did believe there was an extremely remote possibility that something like Bigfoot may have evaded mankind, but, now decades later, given the focussed efforts to find one, it seems highly unlikely.
The film is intriguing, but has it's problems. If they could get a modern digital image of a Bigfoot, then there may be a case to be made.