As of your first point, there may be another natural virus, as of yet unidentified, possibly carried by a different species, that brought the disease to Wuhan. From the virologist chatter I hear, the genetic difference between RaTG13 is too large to have RaTG13 a recent direct precursor of SARS-CoV-2, either through genetic manipulation, or via culturing.
Alternatively, everything that came out of China since Jan 2020 is pure BS. As of yet, there is no independent verification of the origin of RaTG13, which conveniently was found 'lying around in a freezer' in Jan 2020, stored there all the way back in 2013. Nor there is independent verification of the genomic sequences of all the other viruses that are 'lying around in a freezer'. Nor are the Chinese authorities very open to international collaboration on this matter.
The sharp politicization of this issue is worrisome in itself.