While there is an impact, that article is a year old. Battery chemistries are changing and the requirements and impact of their production are already much better than 1 year ago. Hybrids use Lithium-Ion batteries, while many EVs have switched to other chemistries because they have a different charging cycle vs. hybrids. The lifetime of these batteries is also far longer than many anticipated, with some first generation Tesla Model S's still being on the road as much as 15 years now.
A friend just came back from a few weeks in China and she said the air quality was dramatically improved vs. just a few years ago, likely due in part to mass EV adoption. So while there may be pollution still generated by the process, it isn't driving around the city where you live every day. OK, the impact is indirect instead of direct, but it is still present, though that will change over time as technology improves.
India has an emissions problem because almost every vehicle there is diesel simply because diesel is cheap.