It makes absolutely no sense. RET has yet again driven itself into a position of defying all the rules of logic. This again demonstrates the simplicity and perfection of FET and shows what a mess RET is. Go RErs with your messed up 9 day week and ponder how a man's son should be his father. RET is just nasty.
And where in your flat world did you find an expectation of neatness in nature? And, since Science is the study of nature, why should Science be neat, at least according to your sense of neatness?
Nothing is much messier than Quantum Physics, and yet you and I are using computers right now, computers that would be impossible without the messiness of Quantum Physics. And the Solar System is not created to fulfill anyone's expectations. It has radiation that could kill our astronauts, asteroids chaotically orbiting between Mars and Jupiter, asteroids that periodically hit Earth, and a whole Oort belt that we are just starting to study.
But the only thing that is ugly as sin is your inability to make even the most elemental predictions. You cannot even predict where the Sun will be today at dusk from your location using FE "theories".
You cannot even see that people don't care whether the Solar System has anything to do with the days of the week. In fact, tomorrow is Thursday, and your religious ancestors from the times of the Roman Empire did not even bother to put the name of a planet to Thursday. They used the name of the god Thor.
And the Germans did not even bother to dedicate Wednesday to a god or a planet, they simply called it Mittwoch, or middle of the week, as did the Russians and many others. In fact, the Portuguese, who are among the most religious people you might encounter, did not put names of gods or planets to any day of the week whatsoever.