Hey! Writer of this article here. It is HomeKit compatible via some workarounds, you can set it up to use Shortcuts and automation in the Home app by connecting to an Aqara hub. Check this video out:
I 100% tested the product, fyi.
HomeKit and the Apple Home app are two different things, although it may not matter much to most users. Being able to work with Siri Shortcuts is not the same thing as being HomeKit compatible.
The most obvious difference that users are likely to encounter is that you cannot use a homekit trigger, like a HomeKit-connected motion sensor from another brand, to activate a Siri shortcut that uses a third-party app, like your pet feeder does.
in this case, you could get around that by using an Aqara motion sensor and creating the automation in the aqara app instead of the Apple home app. The aqara motion sensor would show up in the Apple home app so you could use it for other things as well, and you would have Siri voice control through Shortcuts, but the pet feeder itself will not show up in the Apple home app homekit automations.
A Siri shortcut can run a HomeKit scene, but a HomeKit scene cannot run a Siri shortcut that activates a third-party app.
I know all of this stuff is really technical, but as a popular writer on this topic, it would probably benefit both you and your readers if you dug a little deeper into the differences between Siri Shortcuts, the Apple Home app, and the HomeKit framework. They have overlapping functionality, and again, the casual user may not care, but there are important technical differences and “works with homekit“ is not the same as “works with Siri shortcuts.“