I agree, Calvinism, carefully and explicitly defined, is found in Scripture. Not everything John Calvin taught is.
Then what was your original objection again, since this post was about CalvinISM, not John Calvin per se?
Oh, I remember. You said:
The only “ism” I care about is biblicism. Beyond that, any of man’s constructs is dung. If I find it in Scripture, I believe it.
CalvinISM is a construct of men, therefore it is dung. But you accept this dung.
Would you like a Mulligan?