What benefit does China have killing the world economy, they rely as much on their export as we do on their manufacturing. Plus China holds a lot of debt from other countries, mainly the US. A, there a much safer ways to destroy the US economy with all that debt, B they would be devaluing their own holds in the USA and other countries. That conspiracy theory doesn't even pass the who would benefit test.
Second, the only thing certain about the Wuhan lab is, that it exists. There is zero reason to believe it escaped there and also proven to be impossible for the original virus to jump from bats to humans without an intermediary host.
https://www.theguardian.com/world/2020/may/01/could-covid-19-be-manmade-what-we-know-about-origins-trump-chinese-lab-coronavirus
Peter Ben Embarek, an expert at the World Health Organization in animal to human transmission of diseases, and other specialists also explained to the Guardian that if there had been any manipulation of the virus you would expect to see evidence in both the gene sequences and also distortion in the data of the family tree of mutations – a so-called “reticulation” effect.
“There is convincing evidence that the new virus was not the result of intentional genetic engineering and that it almost certainly originated from nature, given its high similarity to other known bat-associated coronaviruses,”
“the early genome frequencies until 17 January do not favour Wuhan as an origin over other parts of China, for example five of nine Guangdong/Shenzhen patients who had A types.” In other words, it still remains far from certain that Wuhan was even necessarily where the virus first emerged.
https://www.washingtonpost.com/national-security/chinese-lab-conducted-extensive-research-on-deadly-bat-viruses-but-there-is-no-evidence-of-accidental-release/2020/04/30/3e5d12a0-8b0d-11ea-9dfd-990f9dcc71fc_story.html
While intelligence analysts and many scientists see the lab-as-origin theory as technically possible, no direct evidence has emerged suggesting that the coronavirus escaped from Wuhan’s research facilities. Many scientists argue that the evidence tilts firmly toward a natural transmission: a still-unknown interaction in late fall that allowed the virus to jump from a bat or another animal to a human.
Here's a motive
Concerns about unwarranted scapegoating of Shi and other Chinese scientists have increased following reports that the Trump administration has sought to pressure U.S. intelligence agencies to search for proof of a link between the Wuhan lab and the outbreak. The New York Times reported Thursday that some analysts fear the administration will seek to distort assessments about the virus as a means of blaming China for a pandemic that has already sickened more than 1 million Americans and killed more than 60,000.
https://www.nytimes.com/2020/04/30/us/politics/trump-administration-intelligence-coronavirus-china.html?action=click&module=Spotlight&pgtype=Homepage
A few scientists and national security experts have pointed to a history of lab accidents infecting researchers to suggest it might have happened in this case, but many scientists have dismissed such theories.
“We do not believe any type of laboratory-based scenario is plausible,” five scientists wrote in a paper published in March in Nature Medicine.
Mr. Trump has spoken publicly about the administration’s “very serious investigations” of the virus’s origin and China’s culpability. Those inquiries took on new urgency in late March, when intelligence officials presented information to the White House that prompted some career officials to reconsider the lab theory. The precise nature of the information, based in part on intercepted communications among Chinese officials, is unclear.
The current and former officials did not say whether Mr. Trump himself, who has shown little regard for the independent judgments of intelligence and law enforcement officials, has pressured the intelligence agencies. But he does want any information supporting the lab theory to set the stage for holding China responsible, according to two people familiar with his thinking.
He has expressed interest in an idea pushed by Michael Pillsbury, an informal China adviser to the White House, that Beijing could be sued for damages, with the United States seeking $10 million for every death. At a news conference this week, Mr. Trump said the administration was discussing a “very substantial” reparations claim against China — an idea that Beijing has already denounced.
Stop drinking the US kool aid.
Anyway the WHO is still on the case.
https://nationalpost.com/news/world/the-origins-of-covid-19-search-for-virus-source-heats-up-as-who-seeks-china-mission