This has been the case from long before DEI. Indians rather have the highest entry barriers for expat entry into the US, waitlists for visa and green cards run towards hundreds of years for each candidate.

I think you are talking about the permanent residence program through job sponsorship. Yes, this is limited because it is based on the country of origin. Countries with fewer residents in the US are given residence quickly. Others are given residence slowly. Viable options for Indians to gain residence here have to be through means other than job opportunities, such as business investments or family ties or extraordinary talent.

A solution of course is for india to split into multiple independent states. Then only one or two states might be given slower residency programs. Others will be given faster programs.