So being vaccinated is correlated with being conservative or liberal which is obviously correlated with how you feel about Russia shocking correlation is not causation. Trying to imply the vaccination itself effects your position on Russia or willingness to believe things is fucking nonsense. Also war crimes is a very subjective thing
I think what it shows, or affirms, is that there is a liberal bias in the media.
Liberals tend to support or at least be more accepting of the media's agenda.
Conservatives tend to be very skeptical of MSM- rightfully so and for obvious reasons.
Therefore if you are not buying the medias bullshit about the vaccine you are also not likely to embrace the medias depiction of events in Ukraine.
Conversely if you believe the MSM narrative for one you likely believe for the other.