What the core dev-s are doing against the ASIC mining is not certain.
What exactly would you like them to do? Hard-fork and completely change the underlying POW algorithm?
Because that's pretty much the only way to do anything about ASIC mining... SHA-256 is "ASIC friendly", you can't change that.
I don;t know, I haven't been involved. But on the other hand, do you think ASIC friendly is a good thing (mining centralized)?
If I were a CEO of a Bitcoin LLC or Bitcoin Inc., I will do definitely strip out SHA-256 and plug-in GPU friendly algo. Not only that I will start it in a blink of an eye and possibly re-architect so any algorithm can be a "plug-n-play"-ed.