Look, it's really simple. If you repeatedly fly into a dangerous area with a poor ship, you deserve to die. It is a valid choice to be a pirate.
Griefing is something else entirely.
I agree, but I see at least two weak points there:
1) killing players much weaker or inexperienced than yourself is not a challenge, so it should not be rewarded
2) what's to stop a “true griefer” (i.e. not a “legitimate, honest pirate”) from wandering into the so-called secure zones just for reaping noobs? Will there be superior police forces appearing out of nowhere? Without this, noobs won't be reasonably safe anywhere.