Classic , pretends to be classic, and in old chronicles you used to be Pked as much as know even if the PK cleaning system was the old way.
It doesnt matter , people that enjoy playing that way will continue doing it no matter what PK system is there.
If you got problems with this, you should just play on oficial Lineage 2 Truly Free servers, wich most of the pvp/pk system is mostly instanced and fucked up wich is like a WoW nowdays