Flu shots have been around for years, and by now people understand that the effectiveness greatly varies each year, but never being anywhere close to 100%.
COVID19 vaccines, on the other hand, were (contrary to today's frantic efforts to pretend otherwise) always sold as being a) >90% protection and b) ending the pandemic once enough people were vaccinated.
COVID19 vaccines, on the other hand, were (contrary to today's frantic efforts to pretend otherwise) always sold as being a) >90% protection and b) ending the pandemic once enough people were vaccinated.