I don't really get what you mean by unfun PvP people, when destruction is a valid goal to drive strategy, and, aside from foul language in chat (which should be blockable) is the worst you can do.
So someone who has been in the game for 3 minutes, in an unmodified Sidewinder, struggling to figure out the game - suddenly getting blasted to space dust for no in game reason whatsoever.... is fun then?
Maybe for the person with the guns. Not so much for the person who then logs out, does a Steam refund and walks away.
There are lots of reasons PvP is unfun. And you know there is, so please don't act like all PvP'ers and encounters are innocent when you know better.
I've been attacked in Open for no reason at all. I wasn't attached to powerplay faction at the time, I wasn't in a hauler with expensive cargo - I was testing something in a new unarmed ship and minding my own business. Then nothing in chat, no warning, no hint of a reason I'm being attacked. That was unfun PvP.
The only reason I didn't complain about it was I'd forgotten I was in Open mode at the time and was distracted. So I blame myself for not swapping modes.