Homsar thinks things can’t change once they start. Everything stays exactly the same all the time.
What’s changed is our understanding of the virus, and the wealth of data we’ve collected, both of which are showing that continued doom and gloom and forcing boosters on people is just dumb.

Incidence of SARS-CoV-2 Infection, Emergency Department Visits ...
This report describes emergency department visits from COVID-19 ...

COVID-19 hospitalizations were rare among fully vaccinated adolescents and young adults; 72% of hospitalizations among fully vaccinated persons occurred in persons aged ≥65 years, (median age = 72 years), 89% of vaccinated persons who were hospitalized because of COVID-19 had at least one underlying medical condition, 15% required ICU admission, and 21 (21%) patients died.
With numbers like these, a booster shot isn’t necessary for most people. People can get the vaccine and protect themselves, or choose not to or risk it. To even assert that boosters are necessary is completely anti-science. Those resources are better spent sending doses to third world countries whose populations haven’t even had a first dose, and places in Africa where HIV-positive immunocompromised people are breeding grounds for new variants.
These people pushing boosters for people who aren’t remotely at risk have more in common with Martin Shkreli than anyone else.