I agree that they ought to invest in a simple tripod or at least one of those camera stabilizer gimbals, but on the other hand, at least we get to see Abbi at all. There are a lot of big boobs in this world but very few that are her size. Realistically, most of us will never get to see a pair that massive/magnificent, so I'll take bad camerawork over nothing at all.
As for 'videos where Abbi does stuff that she never does but which every other model does,' like clapping, I finally found one where she briefly sucks her own boob - #99, the ice cube one.