A lot of the content was not subject to any copyrights.

That is correct and even the copyrighted ones shouldn't be an issue anyway, people can only use the images to reconstruct plastics and decals for their own games, the images (well most) have no physical dimensions so it would be near impossible to mass produce any of them unless you had the actual game in question to check for correct fit and colour match.
A real shame, I'm glad I just uploaded a couple I needed last week.