Glad to hear it. The whole line of drivers I'm working on are going to be the same no-MQTT design. It's not terribly difficult getting the devices to 'auto-configure' a couple webhooks to have them just send Hubitat the necessary data rather than sending it to an MQTT broker. Or use websocket for things that are AC powered.
My home is 100% run from a single Hubitat C8-Pro. I like things simple, and that means not running a server, MQTT broker, Home Assistant, etc. My 'Sonos Advanced' app was created so I could finally ditch HA and have all the functionality I needed right in Hubitat. Now I'm working on Shelly drivers too, with the same "doesn't need anything other than a Hubitat hub" model for them.
