It's a well-formed, well-written, and thought out post. But it does not answer the question. It's a pretty simple rule to avoid being deleted. Along with not spamming and a polite tone, answering the actual question is about the minimum one could request to avoid post deletion.
You are correct that it does not matter if the post is right or wrong, and there's plenty of wrong answers still published on the site today. But they do attempt to answer the question as given, so they remain undeleted.
Unfortunately, we cannot refund you your time (if you know a guy I'd like an introduction). Even spammers and offensive trolls spend time on their wanton advertising and hateful speech, yet those posts are deleted without consideration for their efforts spent. So I'm afraid we cannot afford you that consideration either.
What we can do is spend our time helping you understand the site rules, dynamics, and when the community takes certain actions. If you are willing to learn from your mistakes then you should be able to post without resistance in the future.
As for this specific answer, if you truly believe that it is a suitable answer to the question, then I suggest another meta post that makes that case. Keep it simple. Probably a short numbered list of what you think the question is about, then a respective numbered list of how your answer answers it. If the community agrees, they can vote to undelete it. It takes votes from three users with over 10K rep or only one moderator vote to undelete a post.