So the Iraqi-Kurds-wanna-be-Kurdistan are like Southern Ireland. In fact they broke away from the main empire around the same time "about a century ago". Turkey is like England or maybe "all UK except Ireland". The PKK is like the IRA during the troubles. So Turkey and Kurdistan are pretty chill and they're swinging some profitable oil deals and generally get along surprisingly well given the demographics. Meanwhile the PKK thinks if they bomb and shoot Britain, err, I mean Turkey, enough, then a magic wand will be waved and the ethnic minority Kurds in Turkey will secede and join Kurdistan. Which is about as likely to be successful as the American Southern Confederacy experiment a bit over a century ago, or better comparison, the actual IRA.
Its almost like an uncanny valley thing. Turks want to genocide Kurds that are like 5 miles away and blowing up their buildings, they'd rather shoot them than let them leave which seems like a pretty dysfunctional relationship, but whatever. But move that same Kurd 500 miles away and the hate evaporates and they're businessmen bros lovin that sweet sweet oil money ahh remember the good old days when we were all an ottoman empire together ahh the good ole days. Just stay where you are and don't move next door, that's all.