That would be the way of things, except that they rolled out a leaky vaccine in the midst of a pandemic. This alters the evolutionary terrain in potentially unexpected ways. It's likely that the virus will become less lethal over time, but the jabs throw a spanner in the otherwise fairly predictable process.
There's also no guarantee that they aren't working on new variants in labs around the world. The Omicron strain has a very different lineage than the Delta.... like they were developed in separate labs from the "wild" strain. They are probably working no new strains by using serial passage through animals like ferrets or mice engineered to have human ACE2 receptors. If they could develop a strain that has a >0.2 CFR, they would probably be able to create a renewed and even deeper global panic. It's all about fear, and using fear to gain control over people.
Thinking an unapproved bioweapon is a vaccine
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