If it's anything like my Trane thermostat, it can act as a zwave hub, but if you join it to Hubitat, none of the functions are exposed and it's not controllable. It can act as a repeater, but I had issues with that so I removed it from my network.
I got this because it is able to act as a generic Z-wave thermostat. This doesn't have a hub in it; you can see in the manual (page 13) there is a section about doing an inclusion of this device into a Nexia bridge/hub.
It should work with Hubitat as a controllable Z-wave thermostat. Mine is brand new - never taken out of the box. I've no experience with it.
If you are a new user and not experienced with things, I'd suggest you think through using this. This is only Z-wave, not Z-wave plus. I bought this before Z-wave plus was widely available. There are much better options available now. (I personally went with ecobee shortly after I bought this, but too long that the return period ended)
I do just want this gone, but I want someone taking it to understand what they are getting. And I don't care if someone takes it just to sell on ebay.