I have seen this to be a truism in my encounter with others who say they are biblical Christians,.. they will reject all five points, not really on the truth of the statements but by the term Calvinism in general, without doing a proper investigation of the origin and the history of the faith,... And as you shared with your last comment, there are many who hold to being a 4 pointer because of their understanding or lack thereof of limited atonement and proudly hold to less then all the truths as given from the rejection by the Synod of Dort,.. I remember reading a comment regarding those who make the claim of being a 4 point Calvinist as thus ''So-called four-point Calvinism fails the test of biblical Christocentricity and, as such, tends to view TULIP as an abstraction rather than centering on Christ. The TULIP only makes sense when Christ is found at its center. Consider the TULIP as a chiasm with the "L" at the top of the pyramid. All grace has its source in Jesus Christ, from whom all redemptive blessings flow. The other doctrines have no power apart from Christ.''
John Hendryx

"A man may be theologically knowing and spiritually ignorant." STEPHEN CHARNOCK