I suffer from a bad case of COPD. So, I received my 4th vaccination last Fryday within the last 8 months. Knowing, that even a slight infection of COVID would likely equal a death-sentence to me and most other sufferers from an advanced case of COPD. Those 4 vaccinations within 8 months have not caused any meaningful side-effects for me. I am as good as before.

Leads me to believe that "overvaccination" is not an issue. But "undervaccination" is. Especially for those that suffer from "pre-covid" respiratory/heart problems.

Again, and I can not stress it more: "Overvaccination" is not the problem, "Undervaccination" is the problem! Especially for those that realise, that even a "mild"-COVID-Attack in combination with a pre-existing lung/hearth problem is likely to be fatal.

Daily, people die of overdoses of "mind altering drugs", but (so far) nobody has died of an "overdose" of currently available life saving vaccines in connection with COVID.  I certainly didn't.

Your body, your choice.