When I said that abortion protestors don't seem sincere in their claim that abortion is murder, I said that because there's a huge gap between the intensity of their rhetoric (claiming that abortion is murder) and the their actions, which 99% of the time amount to little more than whining on social media. A very small minority resort to some form of vigilantism, those few probably believe their own rhetoric but the rest of them are full of hot air.

But this argument also applies to the "You're killing Grandma!" crowd. Very few truly believe that refusing to take a vaccine is a murderous act, and that's why the most they do about it is whine online.

In both cases you have people using very hyperbolic rhetoric to support a position they don't actually feel so strongly about. Very typical of American politics.