True.
I find it interesting that Van conveniently left out the meat of the matter of the heretic Thomas Jefferson's problem with John Calvin.
It is that Calvin excluded good works in the biblical concept of predestination, that, in other words, God chose us unconditionally.
I'll quote this, and find it laughable that this portion was left off of Vans quote:
"Calvinism has introduced into the Christian religion more new absurdities than its leader [Jesus] had purged it of old ones," he explained. What would have been the proper response to the "insanities of Calvin"? The "strait jacket alone was their proper remedy." Like Adams, what bothered Jefferson most about this philosophy is that it undermined morality. Any religion that eliminated good behavior as the path to salvation merited no respect, and any god that picked the favored few without considering the lives they led was an imposter, in Jefferson's view.
There we have the crux of the matter. That, and Jefferson proves further and with another reason as to why he is an heretic; he supposed he could merit favor from God via morality/good works. No wonder, he also denied His miracles, the Virgin birth and more. God wasn't really God to him.