Yep. Just remember that Webcore, being a smartapp hosted in the free groovy cloud, will stop working very soon once that cloud service goes away, so people won’t be able to use that part of the Reddit post instructions any more. 
As for the green power devices, there’s a brand new option as of a few weeks ago and it’s an even easier method than the hue phantom bulb, although more for on/off than dimming. 
Amazon has now added these as potential triggers for an Alexa routine (not a SmartThings routine). So that’s an easy integration to SmartThings for those using Alexa.
(If someone knows one way or another if the same option is available in Google Home routines, please let us know.)
More discussion on the new triggers:
Alexa adds more routine triggers, including buttons and lights
And if you didn’t know Webcore would stop working with SmartThings soon, see:
And
FAQ: I have no idea what Edge is. Is that a new developer tool? (2022)