I've been using X10 automation since the 80s and this protocol has worked well for me over the years.
I created a front end for Ha-Bridge when I first got Alexa but now that i have a google mini control through the Bridge is no longer possible.
I played arround with Smartthings and a RM Bridge and SmartThings does work for X10 too.
However i discovered I don't need the Rm bridge and broadlink to control my x10 devices via Google.
Using the smartthings cloud I can use their app and skill no Hub required