Doesn't the article debunk this in the first paragraphs?
That night, I googled Bhoochakara Gadda. There wasn’t much. Wikipedia identified the scientific name of the plant as Maerua oblongifolia, but had no photos of it. Maerua oblongifolia is a low, woody, undershrub found in India, Pakistan, parts of Africa, and Saudi Arabia, whose tubers are sold as snacks and used as a stimulant in the ancient medicine system of Siddha, I read. Research papers showed its leaves and flowers but not the root. So I decided to dig in.
I had a breakthrough a few months later when I came across a thesis paper by Dr. MS Rathore, who had propagated Maerua oblongifolia in the lab in 2011. He had seen the tree many times in the desert state of Rajasthan. “But I haven’t heard or seen anybody eating the root,” the scientist said over a call, sounding puzzled.
“Its roots are sparse and inedible,” added Dr. NS Shekhawat, his thesis adviser and a retired professor of botany. “Growing in dry regions, where will it have so much water to develop big roots and be fat and juicy? [The snack] can’t be Maerua oblongifolia.”
The pictures in the article don't show that arrangement, it's more of a single fibrous block.
I've eaten plenty of fresh palm-tree heart, you either slice it thin it to eat raw or cook it in larger blocks, in say some curry.