No, Occam's isn't proof and I didn't say it was. Occam's Razor is a principle of parsimony, a way to evaluate answers to questions. I presented it in support of my answer to the question because the question involves something non-physical that physical sciences alone are unable to confirm. Again, the "connection" is obvious, we are spiritual and we have a sense of morality judgement and act upon it. The later comes from the former, and Occam's Razor supports this. Biological observation and behavioral information of other species also supports this. I could also throw in 'common sense' but you seem to be lacking in that department.
Now, a salmon and how it reproduces is totally physical, we can derive an answer to the question of why salmon only spawn when they swim upstream at certain times of the year because we're dealing with physical nature. But if we had no physical way to evaluate the question, Occam's Razor wouuld apply. Salmon obviously must swim upstream to spawn, since that seems to always be what happens whenever they swim upstream at certain times of the year. It's not an unrelated coincidence. The two unique circumstances are related. Occam's Razor doesn't "prove" this, but it helps to support the argument.
While we're on the subject, let's talk a moment about "proof" and what that means. In a purely philosophical sense, NOTHING is proven. Not even reality. Proof is subjective. It is dependent on personal evaluation of what you are willing to accept as valid evidence. You may say, "well, I can prove gravity by doing an experiment..." No, you can prove gravity to yourself because you are willing to accept the evidence of your experiment as valid. If I am not willing to accept your evidence as valid, you've not proven gravity to me.
In the case of spiritual nature and things related to spirituality, you refuse to acknowledge they exist because there is no physical evidence. I can't change that fact. I'm never going to be able to present you with valid physical evidence of spiritual nature, and if I could do that, it would immediately cease to be spiritual nature, so we have a logic dichotomy. I don't know which is more stupid and idiotic, a person who thinks there can be physical proof of something spiritual or someone who posts on a public forum as if they expect such evidence to be presented. Repeatedly doing this doesn't make you any smarter.