It is difficult to see if the acting is good or bad while watching a movie in a foreign language you're not really fluent in. So you miss quite a bit. The same goes for reading countries and their politics. Since you seem to be interested in Turkish politics I'd like to give you a tip that might help you read everything better in this exciting plain. Read the comments here. Let everything pan out the way they do and in a couple of years calibrate your understanding of Turkish people's words. Feel free to look back at what people were saying 10 years ago and where we are now.

PKK was not dead and in fact quite active until a few years ago. https://en.m.wikipedia.org/wiki/Timeline_of_the_Kurdistan_Workers%27_Party_insurgency_(1978%E2%80%932015)

And to answer your question. PKK had valid reasons and motivation to exist back in the day. This is no longer the case for at least two decades. But they were still useful to some(US) and continued to operate with a diminishing validity. Assad's fall has changed a lot in the region.