I do feel like you're looking for an excuse to not like Caseta. If that's the case, nothing any of us can say is going to dissuade you. 
That's entirely up to you. However, I really believe you should step back, and give Caseta a chance. I have replaced every switch in my house with Caseta Switches, Dimmers, Fan Controllers, and Pico Remotes. They have worked flawlessly for over a year now. Not one of them has ever failed, nor is performance an issue. The integration with Hubitat has also been 100% reliable and very fast performing. Your Caseta SmartBridge Pro will open up all sorts of integration possibilities, regardless of whether you use Hubitat or not. Caseta works with SmartThings, IFTTT, Amazon Alexa, Google Assistant, Apple HomeKit, Logitech Harmony, Sonos, Ecobee, Home Assistant, etc... It can work with all of these systems at the same time as working with Hubitat. With Lutron, you're getting an entire Lighting solution, that can be integrated with other systems, and/or operate entirely on its own. To me, the number one feature of Lutron devices is that they just work, every time, without fail.
With Z-Wave and Zigbee switches/dimmers, you're dependent on a single controller's capabilities (which is quite good with Hubitat, BTW). If you ever change the controller, you have to remove and pair all of the devices again with the new controller. I used to have GE/Jasco Z-Wave switches. I was not impressed with those due to them not being 100% reliable in my home.
Good luck and I hope you find something that meets your requirements, if you decide against Lutron.
