"What they're saying: "Even if boosting were eventually shown to decrease the medium-term risk of serious disease, current vaccine supplies could save more lives if used in previously unvaccinated populations than if used as boosters in vaccinated populations," the scientists wrote."
In other words, it isn't even saying they aren't needed at all, but that it is better to have everyone fully vaccinated before we start on giving boosters - with the exception of some folks with compromised immune systems.
And to be fair, this is the sort of messaging that other places were handing out. It also isnt all that unusual that different parties give out different information, especially when some of those folks aren't medical professionals versed in such diseases or the intricacies of the immune system.
Your comment also makes me very happy to not be in the US right now. The government here (Norway) simply sent me an SMS when the vaccine was available, and prompted me to schedule both doses at that time. I imagine if we get to the point of booster shots, something similar will happen.
But I hope we get the world a dose or two of the vaccine first so that fewer people might die.