Please see the following discussion in the comments of my answer If $a > b$, is $a^2 > b^2$?
I feel this style of slightly rude comments which contain much more subjective argumentation than mathematical are actually confusing to readers (like who posted the question) and that it is counterproductive in general to waste time trying to force people to teach in the same was you like to teach.
My opinion is we should try and keep that type of comment to a minimum, but what does the rest of the community feel? (I am expecting that my opinion is the minority and mostly curious about peoples justification for disagreement).