OP your missing the point of that being raised. And is smallpox mandatory here? I didn't think we had any mandatory but could be wrong obv... (Just googled. It hasn't been mandatory since 1971!!!).
While there may well be posts arguing for it to be mandatory because smallpox mandatory.
All the posts I've seen raise it because well known.
The point is that when people see it as their choice based on their personal assessment of risk of contracting/ severity if do.
Then naturally uptake will fall.
And that's not good because vaccines are preventative (which is obviously better than treatment in terms of patient, NHS resource) and need a very high uptake if to work well or even at all.
Example measles vaccine. Report v famously led to reduction in uptake here.
(And elsewhere in some areas even before net, people were traveling to areas and pushing scare stories about specific vaccines or all vaccines as well).
Result- measles outbreaks here and around the world. Consequences include loss of hearing, death, can't remember others.
And reason mention this is that measles has been uncommon here for years. The memory of the impact it can have is for many not there. Because of vaccine.
Then. Loads think well doesn't sound too bad. Everyone used to get it! Hmm. Not going to.
And back it comes.
In areas where there were outbreaks they had a stack of people turning up for vaccination who hadn't taken when offered for whatever reason.
That's why it's compared to other vaccines. Because with vaccines individual pick and choose based on how feel about illness will alter vaccination uptake across the board. And that has consequences.
I know loads don't think that way. I'm only saying why smallpox Vax comes up.
And given the OP is WRONG anyway. Whether they have any interest in accepting and rephrasing let's see.