Your last paragraph is really difficult to parse. I originally thought you liked the feature because it put you through the emotional wringer (in terms of making you work through certain negative emotions), and that it wasn't coddling you.
Thanks for the feedback. I find writing to be very difficult. It’s really helpful to me when people take the time to point out where I’m not clear, especially when it’s constructive feedback, like yours is.
For what it's worth, I thought your meaning was clear. Your third paragraph opens with "however," indicating a contrast to the previous one (in which your love for FB is stated). So I interpreted "emotionally impactful" in a negative rather than positive sense. As a result I didn't have any issues with your last paragraph.