Quite the opposite. In the mid-1970's, when he first began to understand what Roman Catholicism really teaches, he knew it was unscriptural. He also knew that to speak out against it would be unpopular and hurt his publishing company.
After much prayer, he made the decision that, no matter what it cost him personally, he would publish the truth that Roman Catholicism is not Christian. He did it because he loves Catholics and wants them to be saved through faith in Jesus, not trusting in religious liturgy and sacraments.
He paid a price for that decision in many ways, as priests and nuns entered Christian bookstores screaming and making a scene, demanding that the store owner not stock Chick tracts.
But that did not change the truth that worshipping a wheat wafer, praying to Mary or the "saints," or paying for your own sins in purgatory was more pagan than Biblical.
But God has been faithful (as He always is) and has protected Chick Publications over the years. Jack Chick has made it clear that if he had it to do over again, he wouldn't have changed a thing. The letters from so many Catholics who have gotten saved carry one theme: "Thank you for loving us enough to tell us the truth!" Those precious people make it all worthwhile.