Hmm.... Looks like this article (or I) touched a nerve. So, are you saying that all of Mitra works should be discredited and he should be shunned by the scientific community?
The works are discredited by their own errors. As for "shunning", the scientific community is under NO obligation to take anybody seriously. The attention of scientists is something that must be earned. Mitra, far from earning it, has actively destroyed any chance at such attention, because of his trivially erroneous claims.
Besides, if you follow the links AdmSmith provided, you'll see that Mitra has received the attention of some physicists. The results of that attention were not flattering to Mitra, to say the least.
If a maverick historian came along and tried to claim that the Roman Empire never existed, or that the United States of America existed before England did, would academic historians be under any obligation to give attention to his work?