New ask Hacker News story: Ask HN: (Why) do we often drop punctuation in messenger apps?

Ask HN: (Why) do we often drop punctuation in messenger apps?
2 by meow112012 | 2 comments on Hacker News.
My daughter asked such question when they looked at my typing on my laptop. I have noticed the same pattern in my Markdown documentations too, which is bad. What is the standard now?