The other comments put it well in saying that vaccines affect other people. Though, oddly enough, we do need better laws regarding what food can be sold as far as that one goes because companies making sugar-filled, addictive food very much on purpose is an action they take for personal gain that relies on hurting others.
For sure people are losing faith in institutions, and that is largely because of the critical thinking issues you mentioned and also the fact that we can’t help ourselves but elect at least a few untrustworthy people into office. The people who attended the convoy were largely Conservative voters and if they have a problem with the government they’re only going to make it that much worse by putting the scummiest people you know into positions of power.
These also aren’t really problems if you think about them or look to places that have already worked them out.