I'm not convinced it is proof that would stand up in a court of law (note: IANAL)

What was the source of Fractalsponge's mesh?

It is always a bummer if someone sweats the details then is not given attribution - but ultimately I'm pretty sure that the Imperial Star Destroyers and their likenesses could be argued to be the intellectual property of LFL. However that is a separate issue from being credited for the work, no matter who ends up owning the IP. I dunno.

Let go of the hate. Consume you it will.