In particular, in the beginning there were very clear indications given by Taiwan and China that there was a dangerous virus spreading among the people. Yet sick Chinese people were free to spread over the world for months with no response except down-playing it. They practiced the opposite of the precautionary principle and horrendous risk management.
When politicians knowingly lie to everyone's faces and take harmful actions against the people, pushing toward a more authoritarian society at every opportunity, how can you have any trust and not wonder about conspiracies?