Fair enough. Such intercultural translation of the one's correspondent's 'emic' into one's own 'emic' ( which could be viewed as 'etic' depending on where one is coming from), is fair enough.
Understanding things through such translation is part of everyday experience not only of an Anthropologist whose jobs it is to understand things that way, but is part of any prudent and healthy interpersonal interaction.
It is professional for an Anthropologist to understand things that way as much as it is professional for a historian to arrive at the accurate dates etc.
Claims, among common people particularly as part of their belief in legends, of greater antiquity to things than a historical critical scrutiny can approve of, are widespread across different parts of the world , not limited to Indian society.
Claims of antiquity and their diametrically opposite claims of 'state of the art' both, used across the globe in marketing , may not always stand the scrutiny for factuality. Whichever of these two claims suits the product is used by the marketing people. The same marketing agency may use both the claims for different products. Hence a certain marketing agency can not be characterised as atiquity-claiming or sate - of - the- art-claiming.
History is part of a larger logical positivist paradigm. Claims of 'scientific' by people working for religion and religious things not standing the scrutiny of science is widespread across the globe across religions. Historical claims about things religious not standing the scrutiny of historical critical studies is part of the same situation.