I agree Jonathan. It is very worrying.
I also find it worrying that they are ignoring the strong possibility that it can be airborne.
SARS was airborne at the Amoy Gardens in Hong Kong. It was transmitted through the soil pipe (sewer pipe from the toilets in an apartment building) due to defective water traps infecting 321 people in multiple buildings.
I believe the source of the transmission at the Wuhan market will be found to be the open pit toilets that are prevalent in China. I have a feeling the virus was initially transmitted via the toilets at the market.
In one of the first medical study of 2019-nCoV Wuhan coronavirus, doctors did not find virus in the stool samples of the two people that reported symptoms of diarrhea (i think it was Patients 3 and 4 that had diarrhea). However they took the sample AFTER the diarrhea had ceased.
In the US - Washington case one of his symptoms was diarrhea. And not surprisingly there was the 2019-nCoV Wuhan coronavirus in his stool samples -- the first reported occurrence anywhere of 2019-nCoV Wuhan coronavirus in the stool.
=== My Guess ===
It is my suspicion that like the incident at Amoy Gardens, some of the superspreaders are the ones that have diarrhea. In the case of SARS I believe it was only 12% of the cases. And that diarrhea has the strong potential to go airborne as fecal particles and viral nuclei. And of course, viral nuclei go deeper in the lungs causing more severe cases and death.
Those are just my thoughts. I am not a doctor. I am a retired cop and a former Nuclear, Biological, Chemical defense NCO in the US Marine Corps. I served on a survey team that was trained to go looking for this sort of stuff and sample it for the doctors and scientists.
In that Wuhan market, the toilets is the first place I would have looked for samples. Not the animals.