alt Hacker NewsThis might not be obvious to some, like it wasn't to me, but Instagram chat history is used for profiling. I noticed when I chatted with someone about something on Instagram, and instantly reels with the subject of our discussion started appearing in my feed.
Failing to connect those dots is (unfortunately) what keeps many, many people from moving their otherwise private conversations to a more private channel. I think you're right that it bears mentioning.