> There are artists who "paint" with bacteria and other live organisms. The bacteria may be producing nearly 100% of the final image (the only reason the works are noteworthy), and in many cases, the result may not be entirely anticipated by the artist. That doesn't mean the bacteria owns the copyright.
But the artist has deliberately set the experiment and put the culture in place to produce things.
In order to make it a valid analogy, the photographer should have acted in a way that purposely invited the monkey to take the camera.
This is did not happen; it was entirely an accident, and his creative input is a question of luck, whereby anyone else who carried a camera and had it stolen by a monkey who clicked around and got a selfie has the same level of input.
Really, this is all just because the guy is a professional who expects to get paid for this, but his experience in the matter has had zero influence on the result.
If I went to Southeast Asia, got my camera stolen by a monkey and had published, I did nothing special to merit attribution.
Honestly, if he had wanted to take the credit for the framing and the positioning then at least he could have done something slighly more elaborate on the matter. A selected curation of those pictures, structured as a narrative, well framed, and placed as an exhibition with accompanying material would have sufficient artistic merit. Instead he chooses to bitch about it on the Internet.