The PKK has always presented problems
If you want to go and define the PKK, they are a socialist organization, with a military-like ‘arm’, and very close to being called a cult.
They conduct kidnappings, sabotage, assaults, assassinations, etc. They are heavily involved in blackmail, money-laundering, and drug-dealing. From the trafficking business of drugs into Europe....the PKK clears one billion-plus dollars a year. They may not make the drugs or do the dealing on the streets of Italy, but they helped to get the drugs to the distribution points.
They are not your friend. Nor are the PKK a friend of Syrians, or for that matter a friend of Turkey. The longer that the US sat there in northern Syria...the more entrenched that the PKK became and in hopes of a mafia-state in the end.