There are many odd contrasts with the FDA. For example, why are they even involved in a discussion of booster doses of the Pfizer vaccine when they've given it

There are many odd contrasts with the FDA. For example, why are they even involved in a discussion of booster doses of the Pfizer vaccine when they've given it full approval? Shouldn't that be at the discretion of physicians or other prescribers? Why isn't acyclovir available over the counter? Why has cannabis been treated as a mortally dangerous substance? Why have miracle berries inexplicably classified as an illegal undeclared sweetener (https://www.theatlantic.com/health/archive/2014/05/can-miraculin-solve-the-global-obesity-epidemic/371657/ https://www.theatlantic.com/health/archive/2014/05/can-mirac..., https://en.wikipedia.org/wiki/Miraculin#cite_note-Atlantic-24 https://en.wikipedia.org/wiki/Miraculin#cite_note-Atlantic-2...)? I think the role of the FDA has expanded much too far.