I think it has a lot to do with today's guys using a lot of test and tren which seems to go straight to the shoulders and the old school guys used more d-Bol & deca. Shoulders are worked with chest and back and somewhat with squats and deads. Also seo use
Wait...test and tren go straight to the shoulders, but dbol and deca goes straight to the pecs?Which AAS goes straight to the calves?
Broscience of peace.