I think it's because you don't understand quite how powerful the smallpox and polio vaccines are. I can walk around wherever I want with 0 concern of transmitting some dormant smallpox or polio. I don't see why people are comparing the COVID vaccine to either of these as you can still transmit COVID. In an absolute sense, all the COVID vaccine does is make your life more bearable, but those around you still have a non-zero chance of getting it from you. When you take that into account I start to wonder why some are so obsessed with treating it like the smallpox and polio vaccines when it is anything but.