"sort of" and "not completely aligned" are just right: IMO, the mark navigation feature is just clunky/broken compared to the alternatives.
You don't want to iterate between the marks in the current buffer in a loop, or somehow keep track of whether each of the last three navigations changed the buffer or not (which would affect which one of the mark rings you'll have to use to go back or forward).
The objective and this command are fairly but not completely aligned, so it may require multiple presses of C-x C-SPC. To be clear, you only need to press C-SPC after the first invocation to repeat the command.