This seems at odds with the gung-ho "it's 100% safe" rhetoric of our politicians.
I am by no means an anti-vaxxer, but I'm already finding it creepy the way any concerns are simply being dismissed. It's also just bad policy: it means that any unexpected side-effects that do emerge (even if very rare / not serious) will look much worse and immediately stink of a cover-up.
What's wrong with saying: "We are confident, to a reasonable degree of certainty, that the risk of taking this vaccine is lower than the risk of contracting Covid"? Not "This vaccine is definitely safe". I am sick of politicians treating the electorate as if they are morons who can't understand the slightest bit of nuance.
As you mention, vaccines can cause harm and have done in the past. Some degree of caution might be warranted.