No. Lots of links and good dig Anon, but to this anon it looks like your links only:
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confirmed their interest in developing a coronavirus that would infect humans
(although the standard argument is to identify a possible naturally occuring future threat)
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ferrets and cats susceptible to many viruses - ferrets are used as research animals in flu & other virus research.
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Yes the virus has some other effects on the immune system as determined in a small number of autopsy cases (mortality rate for the virus low so this a special or more susceptible population? Don't know.)
The only paper suspecting antibody production a problem in patients was the one pushing for a vaccine. Other articles reported typical IgM and IgG antibody responses in covid-19 patients.
The article you list as saying "no neutralizing antibodies" looks like relates to an effort to develop a method to make neutralizing antibodies commercially available as a treatment for the virus, a highly competitive business venture. Not a lack of production in infected individuals.