I agree. My brother is now a Presbyterian and he has little knowledge if any of Calvin or his teachings.
I’m a Lutheran but I live in a small town with no Lutheran Church. I attend a Presbyterian Church. Once every three years or so the pastor gives a sermon affirming Calvinism. The rest of the time the people of the congregation live as if they’re mainstream evangelicals. I like it that way because they are warm and loving. My personal experiences with hard line Calvinists have been uniformly negative. I can only speak from what I have seen and experienced myself, but from that perspective the Calvinists I have met and interacted with have come across as cold, aggressive people. [Watch me get attacked just for relating a little piece of personal history.] Fwiw.
I think you are confusing Calvinism with a comparison between Covanent and Dispensational theology.
Basically, Calvinism is compared to Arminianism.
There is a spectrum within the Reformed camp. We have amil-style crypto-Lutherans in the Reformed churches, making much ado about two kingdoms and pluralism. We also have rock-ribbed, postmil, Puritan-style Calvinists, who are not opposed to applying the abiding principles of the Mosaic Law to all areas of modern life, including family and government. It seems everyone manages to quote Calvin to their advantage while making their case.
On the other hand, I appreciate someone in the Reformed tradition today that actually cares about what Calvin wrote. At least there is some basis for disagreement and discussion. My experience with the Reformed churches today is that classical Calvinism is dead. Its more like a blend of Baptist and Pentecostals. At this point, just about anything would be an improvement.
Some of us try to do more than just talk about it. If it is not a life-affecting worldview, then it is not genuine Calvinism.
“[Calvinism] is not merely the hope of true religion in the world: it is true religion in the world — as far as true religion is in the world at all.” — B.B. Warfield