@surreality Here's the thing, though. I think you're right, "Believing isn't inherently bad", isn't possible to stand as true or false. However, it's also meaningless to any real conversation. It's the equivalent of "It's possible that mistakes were made." It makes no point, it stands on nothing - it can't be true or false because it has no real meaning. No matter how someone tries to engage with that statement, it's not going to be sufficient, because that statement is so broad and loose that no matter WHAT the reply is, someone can then say, "That's not what I meant!" So, yeah. Using that statement sets you up for frustration.
And, for the record, my take is, "Bigfoot probably isn't real, because in decades of dedicated hunters using state of the art technological equipment, no one, not on purpose or by accident, has ever managed to bring one in. Or a piece of one in. Or find blood from one that can be reliably identified as coming from an unknown animal species. And we're not talking deep sea trenches here, we're talking the Pacific Northwest. If someone should, in fact, turn up with a dead Bigfoot, I will be tremendously interested, but suspect that the chances are very, very low, and you probably shouldn't quit your job to go into the about-to-explode Bigfoot leather industry."
Admittedly, that doesn't fit on a bumper sticker as easily. And I suspect that you may be conflating more than is being said, as well. Someone saying, "I don't believe that Bigfoot, ghosts, psychics, or angels exist," is not actually saying, "I don't believe that all of these things exist /for the same reason/." Generally, there are distinct reasons behind the non-belief of each, although many of those reasons fall into an overarching trend of "There isn't any evidence." And while I agree that "no evidence for magic" is not the same as "no evidence for Bigfoot", it IS possible that there's simply no evidence on either of those fronts, and so those two disparate phenomenon get chucked into one broad category of, "Things there is no reliable evidence for."