I am unsure how your individual takes are relevant to the passages you quoted or are at best fairly surface level abstractions or dodges of main topic at hand... and on a personal note I must say that I am quite tired of this style of engagement where an entire post is chopped up, regurgitated and replied to in short, low effort dismissals. If you can't write your own damn paragraph, don't bother.

I will leave this with an answer to your first question. Yes. Laws and legal theory are CREATIONS. Somebody wrote them, had intentions for their use which they tried to write in such a way to illustrate their intent because intent, letter, cultural continuity of precedent and effect to obtain peaceable justice are four independent vectors under which justices balance their individual rulings between. Rights are a body of law. Every single individual part of the operating system of the legal system is essentially optional and it CREATES the rubric for what is a legitimate use of force on behalf of the State. You are simply used to the one into which you were born and are choosing to believe it represents a universal truth. That whole legal possession of in(un)alienable rights was at one political considered a completely radical idea and it had critics. The "Divine Right of Kings" is tracable in an English sense to the Magna Carta which outlines the rules of legal succession which served as a constitutional document. You can trace the application of rights to the populace at large back to the English Bill of Rights from 1689 based largely on the ideas of John Locke and his contemporaries which mostly gained traction as a knee jerk response response to the perceived flippancy and overindulgences of James II but those rights are exceedingly foreign to our modern eyes for not the least reason they are very stratified by class. Your fun fact of the day is the UK didn't legally have the very basics of human rights outlined as we know them in the American modern conception of them on their books until 1998 which was also when they officially repealed the death penalty since it was an ultimate violation of their conception of rights of the person.

Perhaps ask oneself if the original Constitutional right to "Life" is truly protected in the US when the State and the states under that Constitution are allowed to schedule the killing of people. That phrase "Life, Liberty and Pursuit of Happiness" is a rip from John Locke's "Life, Liberty and Property" in which his definition of "Life" meant "to live a style of life free from government interference." This is what has been interpreted as the US Constitutional definition. UK Human Rights Act of 1998 protects a right to "life" as in a right to breathe, think have a pulmonary rhythm etc. Thus while both promise a right to "life" only one is explicitly understood as a protected right to be alive. You have no perfect Constitutional right to be alive in the US.

Every law requires interpretation at it's point of judgement both ways because the question "what is law" in a broad philosophical sense is something every court grapples with every day. Your take is very much overly simplistic.

... And please don't try and post "gotchas" because I didn't list particular nitty-gritty aspects of individual laws I mention. My posts are long enough and I need to truncate them somehow.