Thanks for the tag, JD.
While Smartthings and Alexa both utilize the same gadgets and certainly are tightly interwoven, I treat them as separate systems in a way.
Smartthings is about automating processes within my home, while Alexa is about using my voice to control things within my home. As such, after a few months of using Alexa I deleted all my rooms in Smartthings. Because I found there was often a conflict, and the ‘natural’ thing is to use natural names with your voice.
Doing this makes your Alexa configuration much more flexible, while not diminishing automations in any fashion. And it really pays off when using an ecobee (or two, as I do) and various lighting systems like Hue… so when you do new discoveries of devices in Alexa or Hue or whatever, there are no conflicts that mess with your voice control.
I do have some rooms defined in Webcore, but that operates strictly for automations and is not accidentally callable via Alexa.
Edit: on thinking a bit, perhaps I was tagged because in the past I said we should be able to use voice to build rules? This would be the start of that, wouldn’t it…