With regard to photography, forensic analysis is an area of expertise (and perhaps the only one) that applies to purported photos of sasquatches, and there are actually many forensic analysts out there both currently working and retired. Their ideological foundation is in both Science and Law; they apply science in the pursuit of legal proof.
Indeed, legal proof may be the *adjective* evidence needed at this point. Most other scientific fields are now fully subject to law and political science. For example, both biology and psychology in the theater of human gender have become (or, more accurately, 'rendered themselves') irrelevant to law and political science. A legal decision that sasquatches exist in a particular photograph may be all the "proof" one needs to ascertain existence.