Or being able to get nothing as diet/zero because they never replace the non-hfcs BIBs.

Half of restaurants seem to forget what backup is when they get these machines.

Very few restaurants have them (especially those without bars), and the ones that do never clean the pump head so it's always covered in dirt and bacteria. At least I know that the soda fountain nozzle(s) gets cleaned nightly at most restaurants. But nobody ever seems to sanitize the flavor pumps.

Plastic pumps separate from the fountain? I’ve seen them once or twice but I couldn’t name a chain that I’ve been to which has those. But also you’d have to know the ideal ratio of syrup to base soda rather than have it pre-mixed.