I also know that we've administered tens of millions of these shots in the US over the past several months. The success rate is overwhelmingly positive even if you consider the failure rate to be a tick worse than the standard vaccination. I'm not some guy yelling at everyone to go get vaccinated because I think the chance of an acute negative reaction is higher than normal, but I'm also unconvinced of any long lasting effects due to the protein hanging around. That part is gone within 24 hours. If you have a negative reaction to it, you may have long lasting consequences. I expect that if anyone is having asymptomatic (for now) effects to the vaccine, we should begin hearing more about it as we approach 12 months with these vaccines in circulation.
Believe me, I want little or nothing to do with the vaccines right now. I'm much more interested in having my immunity tested because I seem to be carrying some. It's just that for anyone without immunity, getting vaccinated would appear to make sense unless... you plan to just sit at home, which is something I already mostly do.
If the damage is asymptomatic, or small and diffuse, you won't see issues till many doses are taken if it is accruing damage. Again the conspiracy, from questionable source, is microclots and microscars potentially killing part of nonregenerating tissues. If you kill neurons or heart cells or create scars, those won't go away even after the protein goes away, and will accumulate with each additional dose. A few won't do much to most, but enough doses could cause issues assuming there was any truth to such.
Any case COVID itself is also a problem, as it will likely continue being around and it is attempting to evolve around the vaccine protections. Some sources say some variants are already just a few mutations away from bypassing the current vaccines, iirc.
This is very problematic, because COVID itself does appear to do cumulative damage by clots, and the vaccines do not protect everyone(as the article says 88% effectiveness against delta) and the percent of the population they protect drops as time passes from vaccination moment.
I foresee that after multiple rounds of covid going around, not only will it kill people, but it could very well leave a high number of disabled throughout the world. We've already seen that in some cases some people can't even go up a flight of stairs after getting covid, but it is likely to also drop IQ, and could result in dementia if damage is enough.