A place like that makes people curious doesn't it? You would expect that either people are seeing something other than bigfoot, or bigfoot would be easy to find there, atleast their sign would be.
Broken tree limbs and hairs wasn't the only evidence collected from that place, I can assure you, and not just TexLa.
I think some people choose not to prove they exist, to bother them, or bring in more unwanted visitors. Beyond that, I'll let you explain it to me why it took so long, if they can be proven.