It doesn't look overly involved to me. Are you able to remove the 2 large branches?
I'm able to remove all 3 of my perches in my cage. One is actually a real tree trunk.
My rule of thumb is not to take the retic out if he's perched. If I have to go in, he gets a few taps and I'll do what I need to do.
He always ends up on the floor at some point, and that's when I'll remove him for major cleaning.
Unfortunately, I no longer view the retic as a snake to take out and handle for fun. He is still worked with and he has not bitten me since last January so he can behave. I prefer he enjoys his display cage and stays busy with the "options" inside.
I don't imagine a scrub being a joy to handle either. I do see your point about sterile caging, however I think you'll see more naturalistic behaviors with the beautiful cage you have there.
Honestly, some of the dirtiest cages I've seen have newsprint for substrate or a similar paper product. There is no absorption with it compared to a husk or cypress product The animals usually will crawl through their own waste when its exposed on flat paper and you have to constantly check the enclosure.
I prefer finding a dried chunk of urate or feces that is covered in the substrate and scooping it out. Its like a litter box for snakes with the right flooring. This is only my opinion, and I know others prefer totally sterile.
I'd at least give it a try and see how it fits into your operation there.
Good luck.