First of all, I am not sure if I understand your post but let me try to give you an answer.
PKK was founded in Turkey in 1978 by a Turkish Kurd. So that organization or its members have nothing to do with Arabs.
Kurds only live in 2 Arab countries out of over 20 Arab countries. Syria, where they number around 2 million people and live in a relatively small part of Syria and Iraq where they number around 6 million people. There they live in "Iraqi Kurdistan".
Before the Syrian Civil War began in 2011 Kurds in Syria played no political role whatsoever and I don't recall any Kurdish groups in Syria operating such as YPG which was founded in 2011.
In Iraq, Kurds have been in conflict with the Iraqi state since the 1940's. In 1946 KDP was founded. The conflict culminated during the Iraq-Iran war (1980-1988) and events in the early 1990's. Due to those events the West (USA) imposed a no-fly zone in current day Northern Iraq/Iraqi Kurdistan and since that period Kurds have basically been independent de facto. Turkey is actually the main sponsor of Barzani and Iraqi Kurdistan. So if you want to defeat Kurds in Turkey you should not help Kurds (KDP) in Northern Iraq or wonder why PKK escapes into neighboring Northern Iraq.
Simiarily Kurds have fought for independence in Iran since 1918.
https://en.wikipedia.org/wiki/Kurdish_separatism_in_Iran
My opinion, which only evolves around events in Iraq and Syria, is that the Kurds can have autonomy in Syria but that they have to choose between either becoming truly independent (and don't continue to be leeches in Iraq) or continue to be a part of Iraq as a federal state but not under the current circumstances and certainly not when Kurdish militias/terrorist groups are targeting Arab, Assyrian and Turkmen civilians and land in Northern Iraq.
Anyway Kurds are divided based on tribal, linguistic, political, historical and geographical lines so I highly doubt that there will ever be a independent Kurdistan in all 4 countries. Between 1994-1997 there was even a Kurdish Civil War in Northern Iraq that killed thousands upon thousands of people.
Turkish-Kurdish hostilities/wars is not my business or that of Arabs. I can have my own opinions but they are irrelevant. Anyway I believe in strong central states in the ME as the last thing the region needs is further fragmentation of nation state so I think that you can guess where I stand in this regard.
Lastly among the 450 million or so Arabs, outside of Iraq and Syria, hardly anyone knows that a people called Kurds exist let alone know much about them. In KSA we have a few people of Kurdish origin (often going under the surname al-Kurdi) in Hijaz but that's about it. I think they can be counted in the few 1000's. Almost all of them have adopted Arabic culture fully and mixed with locals. I must say that we luckily do not have ethnic tension inside KSA or a "Kurdish problem". The benefits of being a homogenous country which most Arab states are.