[prudhvis]

I think a bit of background is in order here. H4 EAD's are only issued for People with pending Greencard applications, that is for someone with an approved Greencard petition.(I-140). So, for some one from the countries you have described, there is no greencard wait times. Which means, a spouse on H4 visa would not have to wait-forever to get work authorization as the primary petition holder can quickly get their Greencard. Not the case for someone "Born" in countries like India, where the wait-times for Greencard is currently at a minimum 10 years and at a maximum 120 years. So, yes this really looks like it is being targeted against people born in a single country.