Fairly or unfairly, it is now a hot political topic.
Agreed -- but the decision to get vaccinated or not may not necessarily be politically motivated.
If you refuse to vaccinated because it's against your religion, or because you have a phobia about needles, your choice is
personal, not political.
If, OTOH, you don't get the vaccine because an ex-president says you shouldn't, or because a current president says you should, then
you've made it political.
Similarly, McDonald's choice to promote vaccinations seems far more likely to be a
business decision than a political one... pretending to care about public health and safety makes for good PR... and it distracts people from asking awkward questions about what
really is in the Filet-o-Fish sandwich (you probably don't want to know).
I took no stand on the merits of McDonald's use of that statement except to say that it will no doubt cause a number of customers to think they don't go there in order to be lectured on a government policy--of any kind.
Except the COVID vaccine isn't a government policy -- of any kind. They are not, AFAIK, required by law.
It is not the duty of McDonald's to educate the ignorant regarding what is or is not government policy...
Had it been something like "Be nice to someone today," maybe that would be different, but not this.
Getting vaccinated is a very nice thing to do for someone else. McDonald's simply chose to be specific and topical.