Politicians(not just conservatives), local governments, business are constantly interpreting various CDC guidance in a way that suits their own interests. They choose to be exceptionally optimistic.
Classic example is CDC saying that vaccinated don’t have to wear masks which promoted businesses to allow the vaccinated to not wear masks when inside their premises. Nice but ignores that fact that many nonvaccinated are entering stores without masks and of course nobody is checking or really has the ability to check. Restaurants are also now mostly completely open which is just about the worse place for COVID spread.
Another example is the enormous pressure to reopen schools without most school age children being vaccinated and choosing to ignore the growing threat of the variants which pose to younger people with the most infected age range being 12 to 20 years old where delta variant is present.