Yes.
Also an activity to pause, to rewind, to exit, etc.
Most able-bodied people will probably just grab the button remote. Since I’m quadriparetic, I couldn’t actually do a pause or rewind before so that’s worth the effort for me.
And because harmony will not let you do the same activity twice in a row, I have two activities for volume up and two activities for volume down and I can switch between them. Again, an able-bodied person probably wouldn’t bother.
Eventually, I’m sure there will be better voice control of entertainment systems. Either a direct echo/harmony integration, or a better echo/fire TV integration or something. But for right now this is very cool for the simple stuff, like “turn on Disney” and Clunky but worth it for people like me for the granular controls.
Most voice remotes right now require you to hold down the speaker button while you’re talking, which is exactly what I can’t do. This way is totally hands-free. 
p.s. I set up a room in the SmartThings mobile app called “entertainment center” and I put all of the virtual buttons into that. So that gets them out of the way but still easy to find.