There's this weird dissonance where people don't seem to want to admit that someone championing the same cause as them can be really really dumb about it. Must be a plant, couldn't possibly be that a lot of people take stances on positions due to their emotional reaction and don't always look at the evidence first. That's just them, not *US*.

I'd agree with that in the context of an individual or a small local group or something.

For a well-established organization like Greenpeace, it becomes increasingly difficult to believe it's a matter of them collectively having an emotional reaction. They have the resources to look at the evidence, and have indeed almost surely done so; when it comes to explaining their refusal to accept that evidence, ”their jobs depend on rejecting it” is a much simpler explanation IMO than “they are experiencing a collectively-identical ideological quirk that their organizational bureaucracy somehow has yet to iron out”.

e.g. PETA