This is sort of like how when the waterless urinal was first commercialized, the plumbers union blocked it from getting approved in the general building code. Eventually a compromised was reached that involves requiring a plumber to draw an water line (unutilized) to every water-less install. Unions for skilled, high-pay jobs in highly regulated industries really extract a lot of questionable value from society.
There are a few places here that use those urinals and the smell hits me in the face every time I enter the lavatory.
In the case you describe, perhaps the unions are a net positive because their protectionist rule will make it easier to replace those waterless stink pits with actual urinals in the future.