is not going to give you any information that you can’t derive by simply looking at the feces yourself

Yes and you don’t have to hire a plumber to fix your sink if you’re a plumber.

The point is:

1. Professional analysis
2. (more importantly) Automated logging (no pun intended), potentially for human medical review periodically, or at a later date.

That you?

Except you made the argument about professional analysis of your poop…