It's a valid opinion that for most people the vaccine is beneficial, but for some people the vaccine is more dangerous than the infection. Usually the plausible example are young children, not people over 70 though.
Until recently we didn't vaccinate children under 12, we still don't vaccinate children under 5. I'm sure there are other groups of people we will never vaccinate. Therefore it's not completely bonkers to believe that you personally don't need the vaccine because you're in a very special group of people while also believing that almost everybody should get vaccinated.
The fact that health authorities have not been vaccinating young children on the basis of the data we do have has made some contribution to the fact that young children haven't had reactions to it.
They are vaccinating children older than 5, you are talking about below this?
There's no evidence you have for this assertion that for children the vaccine is more dangerous than the illness. Neither are particularly dangerous at all for young children, but the disease has been linked to deaths in children.
The chances of myocarditis didn't seem to decrease with age as fast as the chances of a serious case of the virus, so maybe there's an inflection point somewhere... Could be at three weeks before birth though for all I know.
In the UK, back in July 2021 the government's scientific advisers said, based on the evidence at the time, the health benefits of universal vaccination in children and young people below the age of 18 years do not outweigh the potential risks [1].
Subsequently better evidence became available, and it was decided to extend vaccination to under-18s.
Perhaps whatshisface is merely recalling six-month-old official advice?
I don't know the statistics and generally believe that everybody should probably get the shot, I just wanted to point out that it's not a lunatic position to simultaneously believe that the vaccine is good and refuse to take it because you yourself might be in a group where the risk of an infection is lower than the risk of the vaccine.