Updated Covid vaccine has 54% effectiveness, new data suggest This translates into < 30% effectiveness of vaccine in field - color me impressed. Why?

Trial conditions are strictly controlled with many risk groups excluded. Which involves people with autoimmune syndrome, who react to vaccination poorly. Whereas the actual effectiveness of vaccines in real population gets often more than 50% lower than in trial tests. Do you still remember the actual results of "95%+ effective" Covid vaccine of Pfizer?

No need to say, that subsequent m-RNA vaccinations gradually ruin even the immunity of otherwise healthy people, so that the gradually declining efficiency of vaccines isn't just a result of viral adaptation, but also cumulative result of all previous vaccination campaigns itself.