https://www.404media.co/why-404-media-needs-your-email-address/

I think you might be a bit lost

on Android, Pixelix shows boosted/reblogged posts on the home timeline, according to the v3.3.0 changelog.

because believe it or not, sometimes important information gets mentioned in a normal conversation, and not everyone remembers to add it to their personal self-hosted wiki afterwards.
and some people, including myself, often go back a few years in a chat history to reference something, or reminisce.