I've remained open minded about the existence of BF for all these years for many of the reasons that you cite.
The Patterson/Gimlin film is still one of the most interesting pieces of evidence. And I'm glad you mentioned it. I typically lean towards skepticism by default. However, this film and the circumstances surrounding it appear to lack the
red-flags that I've come to associate with a definite hoax or unintentional misattribution. And I have not come across a single scientific or expert analysis that comes close to presenting an argument that conclusively raises the probability that this film is not authentic. Even the
Wikipedia article stops short of the usual presumptive labeling that they employ in articles related to the paranormal. Of course that doesn't prove the film is authentic. But without a compelling skeptical analysis, I think it still remains as one of the best pieces of evidence that we have that a large, hairy bipedal creature is indeed still out there.