This question already has an answer here:
I had a long-term personal questioning about the fact if Markdown + Mathjax (which is great on math.SE for example) could be one day derived into a typesetting tool for printed documents.
Before asking the question anywhere on SE, I decided to investigate what website is more appropriate about tag
[markdown], to avoid off-topicness: the answers are in my first and second questions in meta.SE. Here is also a useful screenshot.
Then I did read this meta.tex.SE highest upvoted answer which seemed quite open to TeX's cousins. After all MathJax is not so far to TeX: at least the general idea of having a language/syntax for maths (same syntax in fact!). For those who disagree, you don't need to explain -- I use and know TeX since decades, I know the differences: rendered-HTML vs. typesetting software, etc.
The aforementioned highest upvoted answer is:
I think (2) [Tolerate them, but leave notes to the effect of "Probably not the best site for this question"] is the best balance. They are within the 'TeX, LaTeX and Friends' area, I guess, but probably outside of the experience of many people here.
I also see a will of promoting TeX, LaTeX and friends.
Based on the fact SO wouldn't be appropriate for my question (not directly a code question), and that the question was about a TeX's cousin, I posted the question here:
which is now closed, with lots of comments.
What is the real harm done in authorizing 0.1% of
[mathjax]questions in tex.SE? I think the highest probably to find MathJax specialists on SE is probably here.
Wouldn't tex.SE be the place to speak about MathJax (except if it's a code question, then SO, of course)? I was told that some top contributors here in tex.SE are in the technical commitee of MathJax. So wouldn't it make sense to host the small number of questions about
[mathjax]here (once again, not the implementation/programming ones, which belong to SO)?
More generally, is it a good idea to be so restrictive to TeX? I mean: we must accept the truth: in 2017 many new TeX users will probably come after having discovered MathJax in math.SE. Why trying to erase this truth and to deny the obvious connection between both?
TeX was built in the 70s, LaTeX in the 80s, isn't it a good idea to accept questions here about the evolution / future of TeX? I don't say MathJax is the only future of TeX, of course not, I still use LaTeX for papers, etc., but MathJax is certainly a (small?) part of the future of TeX.
Another evidence: we all know that lots of software now have an equivalent in the browser (maybe just a trend or a long-term move in software development, I don't know). Isn't MathJax and editors providing MathJax typesetting in the browser (such as StackEdit) just one more example of the "standalone software" => "app in the browser" move? Why refusing to face this reality?
Note: this question isn't really a duplicate because it doesn't specifically the points 2., 3., 4., 5.