Absolutely. It's all bespoke. I was aware they tried copying cruise ship lines, but for Uncle Sam it's the first implementation.

By using a specialty plumbing system they have ensured: parts will never be cheap, or readily available. Because the USG only fucks with 100% domestic origin goods, those parts are on a short list of availability. Because they are likely bespoke, the list is even shorter. They won't be sourcing from the same established vendors the cruise industry sources from unless somehow the entire supply chain is US supplied.

The USG doesn't have their own turd wranglers, so now they have to find overseas turd wranglers that can be approved to venture onto an active military ship, to fix the fuckin john. Or they keep it American, and fly in turd wranglers to fix the fucking john who specialize in cruise-line style waste evacuation systems.