The battle worn skins aren’t new, they actually had their own 2900 priced bundles, for 5 skins times 4 bundles 1 for each character.
Meanwhile chemzone sludge or fireclaw or tundra or the hazard paint one can be done on all vanilla weapons for 800. I wonder why those ones never come back 
While I also think that’s very probable, we should never forget that we can’t assess the actual time & effort to make anything new in a game, and that we are prone to fall for misconceptions as FS’ design director Victor Magnuson explained in this interview at 12:10:
I agree about the penances, but the commissary hasn’t even been updated for the weapons of the Secrets of the Machine God update in June 2024, so I don’t think that says anything about the Arbites.
But it says a lot about Fatshark.