This response is not directly at Robert but his post compelled me to state my position.
I declined speaking to someone and promptly refunded the money (after they paid for an ELI Support Call) because I discovered that that person wanted to spend most of their time discussing the ins and outs of a fair use defense.
I generally cringe when people want to use a "fair use" defense. It doesn't mean they cannot do it. It just means, generally speaking, I want nothing to do with it because most of the examples I see really doesn't meet my threshold for a solid fair use defense.
It is a very "soft" defense, very subjective, and very much a grey area which I agree with Robert.
I tell people that they can use any defense they want because it is THEIR CASE. They get to choose. But that doesn't mean I have to be onboard with it or want anything to do with it. And if they strongly stand by it, they should go consult with a lawyer who is very knowledgeable about fair use defenses. It ain't me.
And many people still don't get it. Most of these copyright extortion operations don't want to file lawsuits. And so people are desperately looking for an absolute legal defense to shut things down. Unfortunately, I have been following this for a decade. There are very few airtight defenses in most of the situations I see. There are generally only "practical" and "soft" defenses available which are have been well covered here over the years.
An example of a "practical" defense would be someone living that committed an infringement on a personal hobby non-commercial website in their parent's basement and has no meaningful assets and income. A divorced woman who lives on government assistance and has 3 children who was trying to make a few extra bucks with the unintended infringement. The law makes no distinction about infringements.
But if a pursuing lawyer knows and can verify the facts of the situation of the accused, I am fairly certain they are not going to be that motivated to go full steam ahead on any lawsuit against such parties. It isn't "practical". Generally speaking, filing lawsuits against broke or impoverished people is not a good use of resources. But copyright collections are not mind-readers. Someone actually has to communicate it so they don't think the worse.
That is why I am not a big fan of just "going dark" without some consideration of the pros and cons of such an approach. Lots of factors at play.
"Fair use" defense is something YOU will have to stand by but it is generally very "soft" in my view.
I don't think it matters what the "site" is about...the court would only deal with the image in question, not the site as a whole. Fair Use is solely up to a judge to determine and can sometimes be a very grey area.. see link below:
https://fairuse.stanford.edu/overview/fair-use/four-factors/