Prior to the patch I've raised my blacksmithing and other crafts to rank 21 using stolen gear and the stuff I loot. As long as the stolen gear had a value attached it would give about the same deconstruct XP as any dropped white items of similar level. Thousands of xp at this rank. Now after the patch, all the gear is giving about 130xp per deconstruct when 43,000 is needed to level.
I don't see anything about this in the patch notes yet it's a big hit to a solo crafter as the stolen items were a main source of leveling xp. I'm deconstructing steel items I find for 1200+ xp while stolen orichalcum gear with a value attached is a tenth of that.