Anymore? They didn't really care much since the beginning, Super Junior was supposed to last for 3 month only, but that didn't happen because they were quite succesfull. You can watch their situation in Japan, they never really debuted there, no actual promotion, but Opera sold in the first week 155,603 copies. Why no promotion SM? However I don't think that's totally true, they care, maybe not as much as their other big groups, but they can still gain a lot of money with them, you can watch the GAON chart I posted or search for numbers of how many people have attended to Super Show 4. (120000 in two concerts in Japan only for example)
This is a really interesting article on why they are still relevant that everyone should read. It's not written by a fan or by an ELF.