You make a great point about many of the questions on the site being of a subjective nature, and that's fine. Subjective questions are okay as long as they follow the guidelines in Good Subjective, Bad Subjective.
The two questions you reference have a different vibe to them. Facts are presented, and at the end, the asker poses a subjective question. The answers are supported by facts, references, or personal experience.
The problem that I see with your question is that there is not enough clarification as to what exactly your question is. This is extremely broad:
Am I doing the right thing under this circumstances?
What do you mean here? Are you doing the right thing about what exactly? Approaching an employee about performance without proof? Asking an employee if he thinks he's giving it his best? Or something else?
Note that subjective questions that are specific tend to fare much better than very open ended ones like this, which don't help get focused answers. Instead, try something like this:
What can I do to make sure that I don't insult my employees when I approach them about their work performance?
In summary, your question was closed, but deep down I really don't think it's much different than the two questions you cite, but it would help make your case for reopening much stronger if you make some edits such as what I've suggested. Be very clear what your question is and define what problem you are trying to solve.
Before editing, first take a look at the answers. Do they answer your question? If they do, then you may want to just move on, as edits may invalidate your answers. However, if these answers don't answer your question, then feel free to give your post a stronger focus.
Once that's done, edit your post here, and the community will take a look and re-evaluate. Good luck! :)