It sucks that happened to you, I'm sorry to hear you went through that but as everyone else has already said, this is not PVP and has nothing to do with PVP. The chat removal in PVP has nothing to do with PotD in anyway, and even if the chat was still there nothing would change.

With that out of the way, kicking is your only option. In a game that caters to Netflix and chillers, that is going to be your only option. They technically aren't doing anything wrong, but you can still kick them since "different playstyles" is apparently an acceptable reason to kick somebody. Your situation isn't much different from the Diadem Afkers. People just like to take the easy way out of things. The phrase "Work smarter not harder" comes to mind. Until SE does something to stop this, they'll view this as the working smarter option.