Have you actually seen a RM11 irl? I'm guessing the legibility arguments you've made here are based on pictures not experience. IRL the depth of the movement helps the hands stand above and distinct from what's below. Under more dynamic lighting the brushed and polished finishes helps the hands pop and once you've had it for a while your brain gets trained to look for those blocks of luminova on the hands or small date windows so that's it's not really harder to read than any other watch.
I do agree with some points like how useless the chrono seconds hand is half the time in that case shape and I'm not an RM fanboi but in this case I don't think the legibility is that bad and even if it was, I think when you start spending big bucks on watches, legibility might not always be that important anyway.