Why do you think "our incertainty is so high we (shall) not make policy recommendations" ? Even if the example you are putting was correct, and there was an in

Why do you think "our incertainty is so high we (shall) not make policy recommendations" ? Even if the example you are putting was correct, and there was an insane amount of uncertainty, it may have still be the correct recommendation and the correct policy to first vaccinate "risk groups" and then later extend to the entire population, when/if shown necessary. In other words: adding "unless conditions change" to every statement made by any organization is redundant, so they don't do it.