This is a false dichotomy. I don’t think any credible scientist is arguing that the virus was engineered. Rather there remain questions about whether or not the virus was collected in the wild by scientist and then accidentally released in Wuhan.
The scientist working on SARS in China at that site says that the COVID virus is not the same as those they have catalogued, it is too genetically different. That leaves several options:
The Chinese scientist is not being truthful, perhaps due to government pressure or desire to save face, and actually knows that her group released it.
A different lab released the virus and is keeping silent about it.
The virus had infected one of their team when they collected samples, but was never specifically sequenced, so they could not identify it as from the lab.
The virus was released by another source, such as the wet market.
None of us seem to be in a position to know one way or another which is most likely. This is a politically charged situation on so many levels.
Notice, nonetheless, that in all these scenarios we are discussing an evolved virus, not human engineered, that was accidentally released.