What a feed is actually optimised for
A social feed exists to maximise time spent scrolling, which is a completely different goal from helping someone manage a pet's medication schedule efficiently. Those two goals pull in opposite directions, one wants attention, the other wants to get out of the way once the task is done.
Why that tension matters here specifically
An app someone opens because a pet has an ongoing health condition shouldn't be designed to keep them scrolling. It should help them log a dose in a few seconds and close it again. A feed pulling attention toward other people's posts works against exactly that.
What Halo focuses on instead
Medications, vitals, a daily log, and a way to share a real record with a vet or sitter. Every feature exists because it helps with that specific job, not because it increases how long someone spends in the app.
This is the same principle behind how Halo decides what not to build generally, a feature earns its place by solving a real problem, not by being a common thing other apps have.