I don't know whether it was a bioweapon. But consider that if the goal of a bioweapon is to disrupt your adversaries as much as possible, which is more effective: 1. having it kill almost everyone (including your own people) and then disappear, or 2. having it kill some people, cause fear and panic, and disrupt economies and societies for years on end? If it is a bioweapon, it's been an extremely effective one.

One “coincidence” to keep in mind is that Hong Kong had months of pro-democracy protests with China having no viable solution to this “problem” until pandemic shut down all street activities.

So it could be that pandemic info obstruction by China in the beginning was related to that regardless of how the virus emerged.