First, there is no constitutional or any other right to vote in a Primary election. Primary elections are the creatures of the political parties, who can do whatever they want.
Secondly, there is no constitutional right to vote, at all. Especially in the case of the Presidency, it would be perfectly constitutional for a State Legislature to appoint its Electors, or choose them by lottery. The Constitution does place limits on what QUALIFICATIONS states may impose on voters (sex, age, race, poll tax) but states certainly could require solving Rubik's cube within 5 minutes or anything else desirable.
My post, however, accepted the notion of idiots voting in the general election. Getting them out of the primaries, where they don't belong and have no right to be, was my subject.
And, if you took what I said about your opinion to be "hurling insults", I apologize sincerely.
Let me ask it another way. Who decides who the idiots are who can’t vote in the primaries? As I said, I liked some of your ideas about closing the primaries, but apart from that, who makes the choice?
It doesn't seem to hurt the Dems!!