At least in the city I live in, extensive outreach efforts were made to educate people. Now, you can always find people who are misinformed but I would worry more about billion dollar media empires pushing unfounded fears of vaccination than innocent misunderstanding.
Are you so sure? "Safe and effective" and similar slogans in other languages were repeated like almost like a mantra, especially in lower-income, immigrant areas of less-fluent English proficiency. And it took me personally meeting someone who developed Guillain-Barre syndrome after COVID vaccination to even begin to question the narrative.
I get that the HN viewership tends to be well-educated and English fluent but there are a lot of people who wouldn't be able to parse the results of a clinical trial or waiver form.