I think you may have miss-understood me. I agree with you 100%. Using the homekit app / with Siri really only gives you the ability to say “Hey Siri water my grass”… You don’t have to do that with Rachio3, daily flex and weather intelligence…
However, it’s a advertised feature that should work… Like myself. Many people waited for Homekit integration before buying a Rachio3. Most that did buy a Rachio 3 have since found out that Homekit integration is “Not All That”