The two aspect being discussed here as blame are both misleading to some extent.
JPMorgan is pure fud and people with any grasp on economics would wonder why they are spending so much time attacking bitcoin, its actually drawing attention to it as a option for investing. They could easily have ignored bitcoin and it would have done nothing, instead they drew attention to it and its opening eyes of people that never would have known. Might lose some but it gains more traction long term.
The Chinese get a lot of attention as well but look at how China limits each person to $50K USD a year to take outside the Country. With clamps on foreign ownership around the world out of necessity they will need to turn to other options to get money out. Bitcoin is a very good option still and exchanges will continue to pop up through word of mouth.
Its a blip and is almost the same as every once in a well Russia saying it will clamp down but with a little more bite to it.

Altcoins generally suffer when forks happen and speculation drives people to bitcoin rather than potentially waking up to a lose in alts just because of a fork issue.