OP: On what grounds do the Heretical Arminians reject the Spirit-guided Councils of the Holy Reformation?
any clearer for ya harley ?
With all due respect I see nothing derogatory with OP's statement given the definition of heretic.
"one who dissents from an accepted belief or doctrine"
Clearly Arminius, as well as many on this board, reject some or all of the Westminster Confessions. Given the definition of heretic OP could have said, "...the dissenting Arminians who reject the...".