Let us be clear here: This leftist is really not asking merely for those of another view to be "ostracized"; rather, he is suggesting that they should be rendered entirely unable to function--and, therefore, compelled, for all practical purposes--to get the shot that they would rather decline.
But I suppose that this should really come as no surprise. After all, it is perfectly in keeping with the totalitarian mindset (which he appears to represent quite well).