The vids you mentioned are not at all impressive to me. If I'm not impressed as a man who is very interested in the subject (esp. as it relates to the PGF primarily) then how can I expect others to be? I don't. They are not. I am not. Like it or not the level of video offered is going to have to be a home-run level. A double or even a tripple won't do.
I understand where you are coming from. I have no idea what a population would be. We would both agree if there were 1 million Bigfoot in an area the sightings are going to be more common than if there are only 10. I'm just a regular joe when it comes to actual outdoor experts or hunting experts. I nearly always defer to them on matters which occur outside my front door. It just seems to me you have two issues here: 1) a NEAR EXTINCT number of Bigfoot and 2) a massive area to populate their small numbers. This supports a saying I read on the BFF years ago: "Bigfoot is like the KGB, you don't find them, they find you"
These two factors for me just seem to be the most likely reason to explain rare Bigfoot sightings and the difficulty capturing one in a fumbling cell phone camera. No other reason needed.
IF the previous assumption you make are true then it is slightly possible the Government would know. However, they wouldn't know any more than lots of non-government agencies and people.
Unless Bigfoot is literally an Alien visitor like ET or some science experiment gone awry, I don't see how Bigfoot would be a threat or concern to our national security. Unless it is 1) highlest level of threat and 2) Proven to exist I still don't understand how that Government left Bob Gimlin alive all these years. Maybe they caused Roger to get ill again but they forgot about Bob. They even forgot to seize the PGF on the 1967/19678 USA tour. Watch out Peter Graves. That Memorial Day footage is out there. Other footage it out there. Many of those people haven't been eliminated either.
We can both come up with some hunters-shooting-each-other concerns. I would agree. Beyond that, we just have to disagree to some extent.
And yet how few times if ever these entities capture a rare animal and so on. Why didn't the government know where millionaire Balloonist Steve Fassett when down in his ballon crash right away?
Government isn't all-knowing but they are still darn impressive with their capabilities and keeping us safe for the most part. Still, it took 5,000 volunteers, dogs, and tech. nearly 1 week to find a lost autistic boy lost in a Virgina state park. Massive private and Government entities and it still took a week in a reasonable limited search area.
I see no reason there has to be.
We might be reading too much into what we think we know and understand about it. Yet, you could be 100% right. This goes into an area I am not as familiar with on those specifics.
On the issue of giant skeletons, the few times I have had discussion with people about them, I have yet to meet one who didn't base their consideration of this issue in a religious context. There are other examples I can think of where religious assumptions or traditional or cultural assumption limit a more objective consideration.
There are those who think the Vinland Map is 100% authentic. Some believe this based on their belief such a map probably existed and the Viking got here first. Thus, the map has to be real. While they likely did arrive in 900 or 1000AD, this has no bearing on the map.