The useful application of ACIM's teachings can also be a point of contention. Although some individuals record good transformations and particular growth from following the class, others get the techniques to be inadequate as well as harmful. The course's increased exposure of forgiveness and enjoy is excellent, but experts disagree that it may be excessively simplified and naïve, failing to handle the complexities of human relationships and the requirement for limits and accountability. Moreover, the course's size and extensive nature may be frustrating for many people, resulting in burnout or disillusionment. Critics claim that the full time and energy expected to perform ACIM could be better used on more empirically supported healing methods or spiritual disciplines which have an established history of effectiveness.

The broader impact of ACIM on the religious and self-help neighborhoods is also worth considering. The program has encouraged an important david hoffmeister following and has been integrated into various New Age and spiritual movements. Nevertheless, its effect is seen as a double-edged sword. On one give, it has presented a platform for people seeking spiritual growth and internal peace. On another hand, their teachings can contribute to a tradition of spiritual skipping, wherever persons use spiritual ideas in order to avoid dealing with particular and social issues. This can result in a form of escapism, where in actuality the concentrate on religious attitudes distracts from the requisite of engaging with and addressing real-world challenges.

Furthermore, the industrial achievement of ACIM and their connected resources raises honest concerns. The proliferation of workshops, books, and seminars based on ACIM is visible as capitalizing on individuals' religious needs and vulnerabilities. Experts argue that the commercialization of spirituality may cause the exploitation of seekers, who might invest substantial time and money into techniques that ultimately do not deliver on the promises. That commercialization may also subscribe to the dilution of the course's teachings, as different understandings and adaptations proliferate, probably resulting in confusion and misapplication of the principles.

Still another important aspect to consider is the exclusivity and dogmatism that may occasionally accompany the ACIM community. Whilst the class it self encourages general love and forgiveness, the way in which it's taught and practiced by some adherents may lead to an expression of spiritual elitism. This will create an "us versus them" mentality, wherever people who follow ACIM are seen as enlightened, while those who don't are considered as misguided or unenlightened. Such attitudes may be divisive and detrimental to the course's supposed objectives of peace and unity. Experts argue that correct spiritual growth should foster inclusivity and humility, rather than creating a hierarchical distinction involving the spiritually awakened and the unawakened.