Feeney committed no heresy.
Okay, since you DO say it, rather than SEEM to say it, I say you are ARE illogical, rather than merely SEEMING illogical.
It doesn’t matter whether Feeney was excommunicated for disobedience, or jaywalking, or failing to say “Mother, may I?” Or whether he was EVER excommunicated for ANYTHING.
That is totally irrelevant to whether Feeneyism is a heresy. Feeneyism is a heresy because it contradicts what the Magisterium of the Church teaches. Whether or not there ever WAS such a person as Leonard Feeney.
Leonard Feeney could be NOT-EXCOMMUNICATED a billion times—and Feeneyism would still be a heresy. The excommunication, whether or not it ever happened, or whatever it was or was not FOR, is simply, totally, absolutely UNRELATED to the question: Is Feeneyism a heresy?
And Feeneyism IS a heresy, because the Catholic Church teaches that water baptism and explicit membership in the Catholic Church are NOT absolutely necessary for salvation.
Or do I make myself clear?