Hello. Disagreeing with a person's decision is in no way an accusation that the person "lacks . . . ability to make [his] own decisions."
It's just a disagreement.
Fundamentals of logic.
That's correct. But, some here are accusing Rush of telling someone to vote a certain way, and accusing the voter of voting that way because Rush said to do it. That is intimating that those who agree with Rush lack the ability to think for themselves.