We don't have the technology yet to create an artificial virus to look exactly like a bat virus. Every technology we have to artificially manipulate viruses would give traces easy enough for any geneticist to identify. We have none of that.
China's lack of transparency isn't any more evidence of a lab escape than our inability to see God is evidence of that God works in mysterious ways.
It could have been in circulation outside of bats for hundreds of years in a variety of species before it came to pangolins and then humans. The source bat population could have gone extinct long ago.
I call complete bullshit on this story. It's the weaving of a narrative based on pure speculation.
It's click bait IMHO.
The issue is not whether it was deliberately made. There is no question that it isn't.
The question is whether they were studying it and weren't careful enough.
I think that's unlikely, though--we have 6 cases of a deadly Covid-like illness in 2012 in the area but no onward transmission. We have suspicion of something Covid-like spreading in Wuhan in Sept/Oct 2019.
The scenario that makes the most sense is that there's something that lives in bats and doesn't infect humans. A variant happened that could infect humans but didn't transmit very well. 2012 was the result. Remember, the dose plays a big factor in how dangerous Covid is and the victims in 2012 likely got a high dose. Most encounters would be with a minimal dose (how much time do people usually spend near bats?) and could easily fly under the radar. Then a variant happens in Wuhan that made it somewhat transmissible but the R0 wasn't too far above 1. Talk of a new pneumonia but not enough cases for any given doctor to see a pattern. Then another variant that was more transmissible--and now individual doctors see enough patients to see a pattern and the alarm gets sounded. The local government does what they usually do--tries to hush it up, but Beijing realizes the truth. They act and the rest of the world sticks their fingers in their ears.