I have been saying that to ensure delivering sufficient nutrition for maximum muscle growth practically requires delivering some extra that goes to fat deposit. With the assumption that we hope heavy resistance training has triggered some protein synthesis.
Anecdotal evidence suggests that delivering an even higher surplus works even better but i wouldn't argue that too hard.. If you could somehow assure delivering exactly the required protein and calorie surplus with none left over to form fat that might work fine.
If you still believe that is the same thing as saying that getting fat adds muscle I give up.
Bulking is by definition unnatural. The idea that all that is required to break away from the natural weight is to lift and then eat naturally seems very unlikely and contrary to overwhelming anecdotal evidence.