We know this because when Omicron hit in late 2021 and the vaccines didn't prevent it, corpos flexed their control of Biden and his admin started making extremely self-defeating and population-damaging anti-science decisions, while simultaneously suborning and corrupting the data we had from key sources like hospitals and schools.
Never in my life has the corruption of US policy been so obvious as when Biden started to bury the ongoing pandemic for his owners.