The snake is eating and obviously chose to climb on the branch, I'd say he's in little need of rescue. Sure, they aren't keeping him in what the "standard" method says is ideal, but calling it abuse that they don't have the sides blacked out or that he's on carpet? That's extremism.
Your own snake recently had shedding issues. How would you feel if some friend of your posted on here claiming abuse of your pet because he had a bad shed? Not all people keep their pets in the same methods as the 'gold standard' advocated by the majority.
I've known folks who owned a ball python for a decade without blacking out the sides, without hides, with a heat lamp and green carpet. The snake ate, slithered about, shed cleanly and in all aspects appeared to be a unstressed, healthy animal. Who would I be to say they "abused" it?