Since its rather trivial to compare viruses and I haven't seen mention about it being a different variant, I assume its still the same virus as original Wuhan ones.
Even to my rather ignorant eyes this makes Wuhan just a place it got spread to wider public, and not much more. Definitely not some patient-0 situation and most probably not even ground-0 one. Now I don't claim to understand why it didn't explode in those early days like it did afterwards, but this fact can't be ignored when evaluating this topic. I wonder why there isn't a single mention of this in article.
The other big inconsistency is that the epidemic did not become nonticeable in Italy until late February 2020. If COVID was already present in September 2019, why didn't it spread rapidly like it did anywhere else?
[1] https://journals.sagepub.com/doi/full/10.1177/03008916209877...