There is a difference between beliefs substantiated by a gut feeling and beliefs substantiated by evidence. Like you, I have a gut feeling that it is, indeed, a person in a suit, but I do not have any evidence for that. The distinction is important in my mind.

I agree it's not evidence, but even then, going by the principle of parsimony (which does not provide evidence, but is a reasonable way of thinking about this) the most likely explanation is also the less extraordinary or convoluted: a guy in a gorilla suit. Why reach for anything else, unless one wants to believe?

The existence of yetis is an extraordinary claim that would require convincing evidence by their proponents, of which this video isn't one (since it's trivial to film a guy in a suit, etc).

I understand your logic. I just find I don't have patience to split hairs any more for an academic stance like yours. To do so these days is too overwhelming.

As xkcd has pointed out, there are cameras everywhere now. I think we can comfortably put Big Foot and the Loch Ness Monster in the bin with the Fairies.