Copper is of course, chemically incompatible with most disinfectants and cleaners and will corrode. Which is one reason it stopped being used when ammonia/etc became super common. They are less common now in straight form (even Windex is no longer mainly ammonia unless you use the original formula version)

So solid copper/brass i can get behind because it probably doesn't affect lifetime meaningfully, but I am very curious how the coating in the article withstands splashes of ammonia or peroxides or other things used to clean the floors or windows.