The only folks who object to John Calvin's doctrine of Predestination, are those who object to the Bible's doctrine of Predestination. Because John Calvin simply taught the Bible's doctrine of Predestination.
Saying "Look at the Scriptures--not at Calvin. Call yourself a Christian--not a calvinist" is like saying, "Look at the Scriptures--not at Athanasius. Call yourself a Christian--not an Athanasian".
Um, sorry, but Athanasius DID correctly exposit the Biblical Doctrine of the Trinity. And so I am pleased to call myself an Athanasian, Trinitarian Christian.
And in like manner, John Calvin DID correctly exposit the Biblical Doctrine of Predestination. And so I am pleased to call myself an Calvinist, Predestinarian Christian
The absolute free-will folks have to ignore other verses.
Deal with it.