I never liked stock Cherry MX Blacks, but I respect them in the roles they were often given. Such as vending machine buttons.
They make sense there, because you want a definite and sustained keypress if you are purchasing an item using one button. [Kind of like how MX Clear makes sense on gas station pumps or alarm systems]. Maybe cash registers too.
Lubed vintage blacks at a meetup actually felt like something you could type with. Caused me to get a few H1 samples. They're actually not bad in stock form. I'm trying to type with the small amt I have, but it turns out they are best for platform gaming. An unexpected surprise.
Anyway, the best use of MX Blacks for me is maybe using their springs in what used to be called "Panda Clears" in this board.