Is Quant trading legit?

I've been hearing a lot about Quant trading recently, but I'm not entirely sure what it is or whether it's legitimate. Could you please provide a brief overview of Quant trading and explain whether it's a legitimate trading strategy? I'm specifically interested in understanding how Quant trading differs from traditional trading methods, the risks involved, and whether it's suitable for retail investors. Also, I'd like to know if there are any regulatory frameworks that govern Quant trading and ensure its legitimacy. Your insights would be greatly appreciated.