Yes, no proof as of yet. But you consider the PGF compellling yes?
The logical conclusion is that if Patty is real? Then others should be seeing the same creature that they caught in the film. And they do.
I find some stories compelling enough, along with my own experience to strap on my boots and go look with a rifle for proof.
Proof is not going to spontaneously appear, unless some logging truck gets lucky, it takes a community out looking, reading reports, crunching data and willing to collect a type specimen if necessary.