Not all creationist organizations have embraced the intelligent design movement. According to Thomas Dixon, "Religious leaders have come out against ID too.
An open letter affirming the compatibility of Christian faith and the teaching of evolution, first produced in response to controversies in Wisconsin in 2004, has now been signed by over ten thousand clergy from different Christian denominations across America. In 2006, the director of the Vatican Observatory, the Jesuit astronomer George Coyne, condemned ID as a kind of 'crude creationism' which reduced God to a mere engineer."
Hugh Ross of Reasons to Believe, a proponent of Old Earth creationism, believes that the efforts of intelligent design proponents to divorce the concept from Biblical Christianity make its hypothesis too vague. In 2002, he wrote: "Winning the argument for design without identifying the designer yields, at best, a sketchy origins model. Such a model makes little if any positive impact on the community of scientists and other scholars. [...] ...the time is right for a direct approach, a single leap into the origins fray. Introducing a biblically based, scientifically verifiable creation model represents such a leap."
Likewise, two of the most prominent YEC organizations in the world have attempted to distinguish their views from those of the intelligent design movement. Henry M. Morris of the Institute for Creation Research (ICR) wrote, in 1999, that ID, "even if well-meaning and effectively articulated, will not work! It has often been tried in the past and has failed, and it will fail today. The reason it won't work is because it is not the Biblical method." According to Morris: "The evidence of intelligent design… must be either followed by or accompanied by a sound presentation of true Biblical creationism if it is to be meaningful and lasting."
In 2002, Carl Wieland, then of Answers in Genesis (AiG), criticized design advocates who, though well-intentioned, "'left the Bible out of it'" and thereby unwittingly aided and abetted the modern rejection of the Bible. Wieland explained that "AiG's major 'strategy' is to boldly, but humbly, call the church back to its Biblical foundations… [so] we neither count ourselves a part of this movement nor campaign against it."