The vaccines cause problems.
That would be readily apparent if, say, 20% of the population were vaccinated. We could see that the 20% of the population was having health problems, susceptible to variants, etc.
But with a push to vaccinate 100% of the population, everything gets muddy.
The leftist corruption in government and business has gotten so bad that I would put almost nothing past them (unless it was doing something good...that would be hard to believe).