I think it might actually be factually incorrect. I looked up the Times Of India article that OP's article was referring to [1], and could not find a source on the biggest plastic polluters in the world.
Then, after searching around, the articles [2] and reports [3] that I found all put Indonesia (not India) in the top 5 polluters in the world. They refer to an authoritative source from Science [4], but I'm not able to access this due to the paywall.
I'm sure I'm doing something wrong. Surely the Times of India hasn't confused "Indonesia" for "India", right?