What, praytell, does it mean, then? The attitude shown here toward Calvinists is decidedly dismissive, harsh, and condemning. Not at all like what Paul said,
2Ti 2:24-25 And the servant of the Lord must not strive; but be gentle unto all men, apt to teach, patient, (25) In meekness instructing those that oppose themselves; if God peradventure will give them repentance to the acknowledging of the truth;
If anti-Calvinists practiced what they claim to believe, their attitude would not be what it clearly is. I believe the word that fits here is hypocrisy.
Gal 5:22-23 But the fruit of the Spirit is love, joy, peace, longsuffering, gentleness, goodness, faith, (23) Meekness, temperance: against such there is no law.
Eph 5:6-9 Let no man deceive you with vain words: for because of these things cometh the wrath of God upon the children of disobedience. (7) Be not ye therefore partakers with them. (8) For ye were sometimes darkness, but now are ye light in the Lord: walk as children of light: (9) (For the fruit of the Spirit is in all goodness and righteousness and truth
The Word of God condemns the anti-Calvinist attitude toward Calvinists, who are Believers as much as you are, if not more so. Of course, if they believe that Calvinists are not saved, that still would not excuse such attitude, because they should be trying to convert us. Their attitude is not conducive to that, at all. They'd rather rail against us, insult us, and tell everyone else how unchristian they think we are. Their hatred of Calvinism is what they hide behind and use to excuse the unchristian attitude toward us.