Appropriate grammar is not necessary for The Fall, both in tribute and dismissal.
Charisma is apparent in the gestures of how you make yourself identifiable while also hiding your identity. If you wanna be super pretentious about it, how many grime MCs were probably great but you never knew what they looked like, but the sheer quality of their voice and their mic work got them over (and let's not pretend there was this fantastical gap in subject matter from MC to MC in grime); likewise these kids do it, but they're also trying to work while offering next to little of themselves visually until they're ready to do so.
The big contrast is the scene is, compared to grime, super conservative in approaches, but its in the little minute distinctions. Anyone can make the "skengs & shanks, mask on when the boy got flanked" record, but instead you have to provide the slightest shades while still being in this extreme monochromatic.