You still haven't backed up your ludicrous idea that an anti-vaxer can cause more harm than a terrorist.
Hmm. Well, we can probably calculate this.
How many people has terrorism killed in the UK? Well, since the end of the Troubles, in any given year it's typically less than 50 (rough source: imgur.com/o5LBSIc). For devil's advocate reasons, let's assume 50 per year.
How many people has COVID likely killed? Officially, the death count is around 225k since the start three years ago, but let's assume that the real death figure is half that to be generous, because there will be cases where someone was near death and Covid was a likely but not certain cause of death. I'll also ignore long Covid and general sickness too, for which cases we know the vaccine is generally beneficial. So I'll just assume around 50,000 deaths per year for this figure to get a lower bound.
We know the vaccine reduces deaths by 90%, even if its effectiveness at reducing the spread of the virus is less than was expected. This is evident in the
data - the death rate and infection rates have fallen by around this figure since the rollout of the vaccine despite all restrictions now disappearing. We also know that, overall, death rates across
all cohorts have returned to normal. So, if the vaccine is killing people (and, yes, vaccine sickness and deaths do happen, I'm not denying that) then it's seemingly a fairly minimal phenomenon.
So all an anti-vaxxer needs to do is convince around 0.018% of the UK population to not get vaccinated (assuming an IFR of ~0.5% in the unvaccinated cohort and ~0.05% in the vaccinated cohort) and they've statistically killed more people than even the worst case assumptions about terrorism would
for one year. Whilst any individual anti-vaxxer is not likely to be a concern, if they were a popular figure and had more than around 12,000 followers and were able to convince those people to not be vaccinated (when they otherwise would) then they are more dangerous than all the terrorists that strike in any given year. They're even worse, really, because those who have been convinced that the vaccine is dangerous will likely remain unvaccinated for life, and will spread further disinformation.