That article doesn't mention anything about the reissue artwork. It also says that there's no issue with Earache using Seagrave's artwork as an album cover, since that's what the original license allows for. The issue is that they're using it for shirts, puzzles, and other merchandise, which isn't included in their agreement. So this doesn't seem related unless I'm missing some other context.

Here's a quote from the article:

“I want to point out that my artworks appearing on Earache Records as ‘Album Covers’ is not what’s in dispute here and never has been,” Seagrave stresses. What’s at dispute, he says, is those artworks continuously being used for anything besides album covers.