Hello Lorian,
I also read your entire essay. I happen to agree with much of what you say, but I think you did not say quite enough. There are several areas of study that support your view, which you did not mention, and perhaps did not yet discover.
I know it is a challenge, sometimes, to find adequate material in support of a given view, so I am suggesting that you might enjoy this web-site on decoherence, maintained by Erich Joos.
You will find that he also espouses agreement with some of your ideas, but I daresay his technical rigor is greatly superior to yours. And his colleague H.D. Zeh is both a masterful thinker and a Math wizard. Sorry there was not more of your essay to comment on.
Regards,
Jonathan J. Dickau