Covid-19 does not match the characteristics that the CCP are stating they wish to develop [1] in regards to targeted biological weapons. The closest I could see to calling covid-19 a targeted weapon would be against people that are already sick have comorbidity. Otherwise at best it disrupts every economy to some degree. It has done a good job of dividing people, creating distrust, angst and anxiety but I would argue that impacted China as well. I could however see a disgruntled lab tech that is angry at the world releasing it. People throw their lives away for far less impact all the time think mass shootings. For a government to use this type of virus as a weapon would require first inoculating all of the people they value against it.

[1] - https://www.youtube.com/watch?v=biNxl7tiVSY [video]