Idk, I don't think they're that blurry if we compare them to similar "conundrums" in other unethical circumstances.

Like, would you think the same of someone owning child porn? They don't distribute it, they don't film the children themselves, they just own the recordings. The law says they're a criminal, but it seems like a similar ethical conundrum - no? (To be clear, I think eating meat sourced from someone who did not consent is wrong. I hope that says enough about how I feel about CP.)

How about owning the schematics for a ghost gun? You haven't printed it, you haven't distributed the schematic - you just own the schematic (and, for the purpose of the example, a 3d printer capable of printing the parts needed).

Seems like the answer is "it's unethical". Gonna need a third party to weigh in.