Seems to me like bubble is on a mission though!
if it keeps him motivated to pick up the guitar and get better then i dont see why not. some people like to shred solos i personally have no desire to xD but everyone has their own path. bubbles has been getting pretty good results the past weeks and its impressive he hasnt playing the guitar for that long, so respect, time well spent. Have no doubt he can manage it if he continues putting the effort!