The model you linked seems to have a backup battery and supports scheduled feeding, so I wouldn’t worry about a HomeAssistant failure too much.
By setting the plans or schedules, the pet will be fed in a regular pattern. Compared to the competition, the function will work even when no internet connection or when the Zigbee hubs goes down!
For some people, not getting stuck in traffic is worth using proprietary software.
Are there any FOSS navigation apps with (paid?) traffic info?