Sashin (post 20) summed it up for me, so I won't repeat too much of what he wrote.
To me, AI is symptomatic of a larger problem, the apparent want or need for many people to live in a fictional reality. We have people immersed for days on end in computer gaming, certain types of people drooling over imagery of women or men they can't have, people who think that tv or cinema fiction is real-life documentary, that the fictional characters played by actors and actresses are their real characters, and so on. They're all based on reality to some extent, just as AI is, but it's bent, twisted, until fiction and reality are indistinguishable, and truth is buried. From the earliest times, dodgy literature, then television and now, increasingly, the internet provides them with all they need to keep their small brains distracted until they drop dead. Who needs a Dreams'r'Us where customers can be drip fed, piped up, and otherwise kept alive while they're placed into a dream state and a computer programme streamed into their neural pathways to live out their lives for them. We have it now, but in a more accessible form.
To some extent, I can understand people switching off from reality now and then as life is pretty poopy for a lot of people. However, it's gone from admiring a painting of a fictional landscape or watching one's favourite TV show to a whole lifestyle, and even business, and, far more dangerously, to determining people's real world thinking and decision-making. Forget bad advise like drinking bleach to cure Covid, think old school propaganda, but on a whole new genocidal level without frontiers. In this regard, we live in a very dangerous and frightening age.
AI's potential hit on photography will be very mild in the great scheme of things. As a photographer, I believe that cynicism will prevail, as it often does in life. Those that produce poor photographs will be ignored, whether they're genuine or AI generated fibs. Those that produce iconic images will be scrutinised, and I for one would welcome the attention if ever I fall into this group. Let's face it, there are some pre-AI iconic photo's over the last century that should be better scrutinised. I personally take no pleasure in deception, to the point where I will not take a photograph if there is an unwanted intrusion, even if it can be digitally edited out later. I want my photographs to be real, and that peace of mind and feeling of accomplishment cannot be catered for by an AI falsehood.
The only real threat to photography is the false documentation of reality (obviously), so genres such as photojournalism (where the consequences could be incendiary and fatal), nature, and to some extent landscape and street photography could suffer. However, that threat has been there a while and these genres have already suffered from photo manipulation/editing, along with false narratives to support them, and there are some well-known examples which most of us are aware of (the McCurry affair being one of the most recent). AI is just a continuation of that 'manipulation', albeit a very powerful tool, or weapon.
Cheers,
Duff.
PS. Just to be clear, when I talk of real photographs, I also include those of an artistic impression - long exposures, black-and-white, blurred, etc. I exclude only those where manipulation (other than basic editing for colour correction, spotting, etc.) or artificial construction has been carried out.