Ask HN: Looking for a previously shared article about mobile chat UX

Hi HN,

I am trying to find an article I read, possibly posted on HN, about how mobile operating systems are becoming/could become the de facto unified messaging interface across multiple instant messaging apps due to the ubiquity of push notifications and the prevalence of contacts on share sheets.

As I recall, it was primary a UI/UX-focused article.

Unfortunately after an hour of trying various search combinations I have not come up with anything. I'm pretty sure it was an article published after 2019.

Hopefully someone remembers this and can share the link with me in the comments.