Actually, the Pfizer vaccine is on phase 4 of its trial, which is the phase that is after it’s been approved and in public use and looks at long term effects and is done, as with any other vaccine, for the lifetime that it’s used. It is described here:
This is the case for all other vaccines so to say that it’s still in its clinical trials is disingenuous and it’s important to point out that Pfizer’s vaccine is using 20 year old technology, that’s just been adapted for Covid, so it’s not a brand new vaccine that’s come from nowhere.
Pfizer have gone through phases 1, 2, 3 and then had to submit their findings to licensing bodies for approval. Which they did and were accepted. Phase 4 will continue for years to come.
Yes, those who aren’t vaccinated for any reason other than a medical professional telling them not to for health reasons (e.g past blood clots issues), is a selfish prick. Sorry it’s just the truth.