Not sure what you mean by quoting that but there's not much controversy that Delta leaked from a Biosafety Level-3 facility in Taipei.
https://fortune.com/2021/12/10/taiwan-investigates-covid-lab...
https://www.taiwannews.com.tw/en/news/4371080
https://www.newsweek.com/taiwan-lab-worker-mouse-bite-covid-...