That's too bad. I went with Hubitat specifically because I did not want to be running Home Assistant on some computer that I need to maintain, but looks like I might as well have gone to Home Assistant all the way if I'm gonna have to run it anyway.
There are many of us who use the best available tool for any given purpose. My home automation setup includes Hubitat hubs, a Home Assistant Yellow, a Lutron Caséta Pro bridge, a Hue bridge, ecowitt & Tempest weather stations, and Logitech Harmony hubs.
In my opinion, there is no perfect hub. Luckily, Hubitat has tools that let me integrate all of the above - so in the end, all my automations are performed on Hubitat devices, both real and virtual.
My Total System is 4 Hubitat hubs, a Lutron Caséta Pro bridge, a Node-Red instance.
Added to that are Apple Home, Google Home and Alexa. I also have a HomeAssistant running on one of my always-on Macs, but none of these are used by the family. Voice gets used to "wake me at 7am" kind of thing. Everything else has been automated and works the way we want. I doubt an actual wall switch has been touched in a couple of years. I have Pico's stuck to the middle of the headboards to automate any of the customizations each person wants.
Hilo is a mishmash of Stelpro thermostat, Sylvania bulb, Enbrighten switch, Netatmo weather station and Onelink smoke detector. All hooked up to a rebranded Alia (Stelpro) zigbee hub. All these could be integrated directly into hubitat except maybe the hub.
Technically, yes, but what hilo brings is handling automatically the challenges and setting the thermostats accordingly. Also, the pricing for the devices is unbeatable, but it comes with a 3 year contract to do the challenges, for which they must be linked to their hub.