Not all habituators are alike, I've come to see.
For instance, what is the NWAC doing in Area X, if not an habituation? Their stated objective is, yes, to take a type specimen, but in the meahwhile they are trying to gather as much evidence and non-kill proof as they can. Meahwhile, they are having a series of interactions over long periods...documented to a high degree. But, very few (them included) are accepting that documentation as proof, as far as I know. Still, they are trying. Could another habituator do any better?
Over on another habituation thread we have a group parsing some video evidence, showing a high degree of interest in getting some substantiation of what happened to one habituator.
So, I think painting all habituators as proof-averse is probably not borne out by things we see here on a regular basis.