I love Soulja Boy almost as much as Soulja Boy loves videogames. He was supposed to disappear after 2007’s “Crank That”—a misogynist dance anthem that was embraced, largely, sarcastically—but instead he hit the gas, beefing like crazy, flirting with major-label pop, and then dissolving in a haze of weird, fractured mixtapes. Early on, he co-opted the image of Sonic the Hedgehog, and in some ways that remains the defining image of the emcee, spinning wheels and flying off to god-knows-where. He could release something like the lacerating, subversive “Turn My Swag On,” on which he defied all reason by electing…