They are not a justification for mandatory vaccination, in an emergency, with what is turning out to be an unknown risk and efficacy profile.
> But unlike seat belt laws, it's not forced.
Good. Keep it that way. But speaking from Australia, the truth of that statement is very context-specific. The government will presumably fine me if I attempt to go for a pub lunch without my smartphone, because then there isn't a way to prove to them that I have been vaccinated. This is a bad, indeed a concerning, thing.
I'd say both makes people just look stupid, especially when using phrases like "driven by special interests".
As long as you have those in place it's only consequential that more protective measures are in place as well - i.e ones that actually do have an protective impact on society
So in principle, you shouldn't be fined for either. But the vaccine mandates are a hill worth fighting over.