I have seen the space bar shrink and shrink. If they added these really useless keys somewhere else, like a tiny button above the F-keys I would not care.
I want a easy to get at space bar, at this rate the space bar will eventually be the size of a regular key. To me it is already too small.
I see, opposite for me: space bar is already a giant waste of a space in a prime ergonomic real estate of your strongest fingers, can't wait till it becomes a regular key that it is in non-ergonomic keybords. And these buttons aren't useless precisely because you can rebind them to something useful, even space if you need more space for it