For your final point, that's not what that means. It's not "observation" that collapses the wave function, at least as you're understanding the word. It's any interaction that requires the information to be known. That includes any particle interactions. It's not consciousness that matters. When we "make a measurement" it's only recording information of an interaction. It doesn't actually matter that we record it, only that there was an interaction. There is zero metaphysical consciousness mumbo-jumbo involved.