Come on, people, give me a break. I've heard all sort of conspiracy theories: SARS-CoV-2 being a chinese biological weapon being purposely or accidentaly released, it being a US bioweapon being false flagged to China to deter its economic preponderance, the illuminati killing the elder to save on pensions, the pharma industry building a plague because they wanted to inoculate the world population with something at once... This is all nuts.
SARS-CoV-2 is a natural virus. It's obvious. Did you see the virus rebooting ? A blue screen here or there ? Is it incompatible with other popular diseases like cancer or diabetes ? Does it have long downtime for maintenance ? Are new versions being installed on the users of old versions ? (no, new versions are used by using new people most often). Do we have any proof it was beyond schedule and over budget ? Then it cannot be an artificial construction.
People overestimate the ingenuitiy of humans. Despite marketing to the contrary we can't build such effective products. If the combined knowledge and budget of the whole species just managed to produce some imperfect vaccines in a year, why should I believe a secret team nailed the contagiousness and letality, the stealth properties and incubation time and the multiorgan effects in just some decades ? Nah, I may believe there're people with enough malice, but not people with enough competence.
We could instead look at how we built so fragile societies that we can't stop to contain a plague when it pops up. That we lack solidarity, externalities management, coordination, priorities, background health and economic reflexes. Neither capitalism, communism or any of the installed imitations stands any deviation from business as usual and crumbles on interdependency creep and fragile trust. Centuries of medicine concentrated in few experts subordinated to their accountants couldn't overcome millions of ignorants alienated in our cyberbubles.
It's not that a perfectly crafted virus disturbed our idillic society and killed millions. It's that our messy Potemkin villages couldn't hold the last straw and we carelessly or impotently sacrificed millions to a random virus in the shrine of our status quo.
If there's a plot, it's in the host society, not in the viral vector.