If your immediate reaction is along the lines of "surely sentiment analysis will analyze all the other words in my post" - consider what happens if your post is split into multiple posts. Some of which, perhaps, are images or gifs rather than words. And some of which refer to pre-existing context between the two people communicating and of which the sentiment analysis cannot possibly be aware.
Anyway, I should get back in the kitchen. I have vegetables to chop.
https://www.nytimes.com/2022/11/19/style/tiktok-avoid-modera...
And that’s only taking about plain speech, not even touching on sarcasm or passive aggressive language, which is a whole deeper level that is even harder to detect…
Not everybody knows how to use /s or jk.