You don't need drugs when you have religion. With 'Singh' in his name, he's most likely a Sikh and Sikhs are required to wear turbans. This is basically his way of being the Sikhest Sikh that ever put on a turban. It's like a neck-hurting equivalent of the people who wear Jesus-themed T-shirts and get into a car covered in Jesus bumper stickers.
He's definitely Sikh, specifically Nihang, judging by the decorations on his Dumalla. Nihang Sikhs are traditionally warriors, and would wear turbans with chainmail woven inside to act as armor against slashing weapons. They also typically wear blue, and the steel bangles are also emblematic of Sikhs.
And that's a real dagger tucked into his sash. (I learned a bit about fighting Sikhs from reading Neal Stephenson's Termination Shock, and watching a load of YouTube videos.)
If he's a Nihang wearing the world's biggest turban and 8 ridiculously gigantic karas, then, my friend, taya-ji there definitely sharpened his kirpan. 🤣