i mean pretty much all sm groups female or male groups have the same path, they hit it big with one song it's what happens after that matters and the fact exo still did pretty well digitally this year with overdose (for a sm boygroup) scandals and all shows that the gp like their music to a certain point and exo are even one of the few boygroups to make it to the end of year digital/download list, so at this point exo's album success is because of fangirls but their digital success is because the gp like their music, though ofc exo still isn't within snsd range of digital success or even general success when it comes to becoming household names but i love my boys and don't doubt that they could make it and yeah suju did get popular when hallyu wave happened