My opinion:
A vast majority of the General Public does not think Bigfoot is out there.
Many of the Bigfooters know that there isn't a Bigfoot.
I would even say that many of your mainstream celebrity Bigfooters do not believe Bigfoot is real.
The people that would say undoubtedly that Bigfoot exists, are the 'knowers'. They have clearly 'seen' a Bigfoot and will not listen to any logic to the contrary. there are 10,000 sightings in databases, if we multiply that by 10, (for those that keep it secret) a 100,000 'knowers' out there in the country. That is far lower precentage of people than have a disorder like Narcolepsy, or are skipping their anti-depressants, or anti-hallucination drugs. Far far fewer.