My concern has always been the capitalist conundrum with vaccines. If you are a drug company and create a vaccine, the natural business question is "how can we make this vaccine a requirement" to guarantee profits? We should NOT want drug companies to view vaccines as a profit generating drug, because then they will find ways to make them mandatory, regardless if they are effective or even needed.
There is very little to stop a drug company from creating a vaccine out of thin air, regardless of its efficacy, convincing government that it must be mandatory, and then sitting back as the profits roll in.
These backlash arguments also lead into a very cynical place where bad ideas either can't be countered at all or can only be countered through reverse psychology.