JMac has done an excellent job at addressing your specific question that was closed. I want to address my issues with this part:
Now, I think physics.stackexchange should be broader in their mindset. The goal should be to promote physics learning overall.
This is a very subjective goal. What is "physics learning overall"? Each user will have their own idea of what "physics learning" entails and what promoting it actually involves. For example, what if I think that it is actually better for you to spend "some days of time" on this issue in order for you to develop better work ethic needed for your physics goals?
This leads to more issues. For example, working through homework problems is very useful for introductory physics students, as it helps the student learn when/how to apply physics definitions, challenges their existing physical misconceptions, etc. Does this mean that this site should become a homework help site? Would we have more "promotion of physics learning overall" if we supplied homework solutions? Or maybe the current homework-policy already promotes "physics learning overall" because it doesn't feed answers to students, which might hurt them later in their physics goals. Two users attempting to "promote physics learning overall" might implement this goal in different ways, which would lead to inconsistency in what stays and what goes.
What about pure mathematics questions that are better suited for Mathematics SE? One could argue that pure math questions "promote physics learning overall", so why don't we just combine PSE and MSE? There exists engineering, chemistry, biology, puzzle, etc. questions that "promote physics learning overall", so let's bring all of those in too. That would promote learning in all of these subject areas.
Of course I am taking this ad absurdum, but it is just to show how such a subjective goal can lead to so many different conclusions. I think the real issue here is that you don't think the question should have been closed, and so instead of learning more about the site policy and the reasons behind it you just conclude that PSE is not in favor of "promoting physics learning overall".