Big uncle, this organization was founded on the basis and assumption that the texts found in the canons of the theravardan, mahayana and vajrayana traditions were corrupted and tainted with self interpretations, as well as false sutras and commentaries interwoven into the texts. In doing so, they do assert that the Bodhisattvas, Lamas, Mahasiddhas and great Yogis are all wrong and are not enlightened as it was not what the Buddha taught. These are some of the ideas that this movement teaches. There is a category of people that Robert Thurman and Alexander Berzin describe as Buddhologists, people who are obsessed with the Buddha and not his actual teachings. They are more than often not obsessed with the "purity" of the teachings and are extremely skeptical of everything. They are very obsessed about whether or not a particular text was taught before by the historical Buddha and that some texts cannot have been taught by the Buddha because of its style or because of the context within it, i.e 'superstitious' elements and are therefore fabrications of people masters who appeared after the Buddha's time. As to answering Vajratruth's question, yes, they reject the whole cycle of prajnaparimita and tathagatagarbha sutras, claiming that those were not the original teachings of the Buddha and that they were fabrications by later masters who added in their own sutras and interpretations, so they do not accept the diamond sutra as a valid sutra.
This is their philosophy and core teachings:
http://www.arahant-usa.org/English/index.htmlWhat I do find odd and perplexing is, why are these people so insecure and so narrow minded to the point where they would need the "original" teachings of the Buddha? What else can it be that would make a person think that they want the purest of the pure teachings, the actual spoken words of the Buddha and reject anything else that does not subscribe to the certain style or philosophy that they assume to be what the Buddha taught? So the Buddha must teach according to their way and their narrow interpretation? Secondly, how would they know what is original and what is not? Are they the Buddha? Even information from historical contexts can be tainted or wrong as people will always interpret history the way they like it. Since history can be written and re-written, and the sutras can be interpreted in many ways depending on the level of those who heard it, how can such a comparison bring about the "authentic" and "untainted" teachings of the Buddha? What is wrong with the explanations of the great masters? Why is there an obsession with the actual words that the Buddha said, if the "diluted" teachings can bring about enlightenment equally as well?
In actual effect, this movement only holds to sutras found within the Chinese translated Samyukta-?gama of Ananda lineage and in the Therav?din P?li Samyutta-Nik?ya of Upali lineage and reject everything else. To me that is pretty narrow. This movement is actually gaining momentum as they assert that the Buddha only taught us the path of cessation of suffering and nothing else. But that is not true as the Buddha have taught many teachings over 45 years and if the Buddha has infinite wisdom, why would anyone want to restrain that wisdom to such a small scope? If due to our lack of understanding and due to our ignorance we are afraid to explore the writings of other sages and masters, why would we invalidate them rather than investigate their teachings? Most of the teachings propagated in this movement are very scholarly in nature. Personally, I find that it is movements and mentalities like this that will destroy Buddhism as the Buddha himself has said:
"Monks, these two slander the Tathagata. Which two? He who explains a discourse whose meaning needs to be inferred as one whose meaning has already been fully drawn out. And he who explains a discourse whose meaning has already been fully drawn out as one whose meaning needs to be inferred..."
http://www.accesstoinsight.org/tipitaka/mn/mn.022.than.htmlIf the two supreme and six ornaments are guilty of this, it would mean that there are no attained masters of this time and age but this is not true, so it means that their methods are not wrong. If this movement is guilty of this, people who emerge from this movement will be very confused individuals who in turn confuse others.