[chaoxu]

I understand this is useful for people who doesn't type math regularly, but as someone who write a huge amount of math, `$...$` is so much less friction than the LaTeX one `\(...\)`.

Even in LaTeX, mix and match. `$...$` for normal mode, and `\[...\]` for display math, and it works well for two reasons. Inline math are generally short, less prone to mistakes, so `$` saves a lot of time.