You’re right, they do, but I have a hunch it might be approved this time, given that LA has this grand plan for swimming, what with a 30,000 + seat venue, and being held in the second week of the Games, and it would only mean 1 extra race per night. More races = more ticket revenue.
A slightly radical idea I heard a few years ago is to eliminate the 800 frees. Like when women’s 1500 free was added, they should have dropped the 800 free, rather than add a men’s 800.