Here's another paper - https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7054935/ that specifically talks about COVID-19's unlikelihood of being engineered. The line "The absence of a logical targeted pattern in the new viral sequences and a close relative in a wildlife species (bats) are the most revealing signs that SARS-CoV-2 evolved by natural evolution" stood out to me.
Here's another paper - https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7054935/ that specifically talks about COVID-19's unlikelihood of being engineered. The line "The absence of a logical targeted pattern in the new viral sequences and a close relative in a wildlife species (bats) are the most revealing signs that SARS-CoV-2 evolved by natural evolution" stood out to me.